Friday, September 24, 2010

Googland

Googland


[G] Elmo answers your questions about housing prices on Sesame Street, Cookie’s veggie intake, and more

Posted: 24 Sep 2010 03:18 AM PDT

YouTube Blog: Elmo answers your questions about housing prices on Sesame Street, Cookie's veggie intake, and more



It's not every day you get an all-access pass to one of the most famous neighborhoods in the world and one of it's most celebrated residents, so when Elmo, Sesame Street's lovable red monster, offered to answer questions from the YouTube community, you seized the opportunity.



Thousands of you asked questions, ranging from "what would you do if you suddenly woke up and were purple?" to whether he would consider a tap dance routine with Ricky Gervais (who recently made a Sesame Street appearance). The result? A very entertaining YouTube interview. Watch it for yourself here:









Elmo now also holds the title for answering the most number of questions in any YouTube interview. He may be small but he can talk fast, rolling through over 20 questions in just 20 minutes. And his good humor shines through - almost every one of his answers is punctuated with his signature giggle.



Are there other characters you'd like the chance to interact with? Let us know in the comments and we'll pass the info on to our friends at Sesame Street.



Ramya Raghavan, News and Public Interest Manager, recently watched, "Will.i.am's Song: What I am"


URL: http://feedproxy.google.com/~r/youtube/PKJx/~3/qVs5HTR6xJc/elmo-answers-your-questions-about.html

[G] Get ready to Rocksteady

Posted: 23 Sep 2010 09:04 PM PDT

Google Open Source Blog: Get ready to Rocksteady

Rocksteady is an effort to use Esper Complex Event Processing (CEP) to analyze user defined metrics. You can use it to parse your data and turn it into events that Esper CEP can query so that you can respond to events in real time.

Too often, metrics and graphs are only useful as an aid in analyzing what happened after things have gone wrong. Staring at a dozen graphs on a TV wall isn't monitoring, it's a waste of time. The goal of Rocksteady is to determine the root cause of breakage based on metrics in real time. Metric analysis is only part of the whole picture though, as we also present solutions including metric convention, metric sending, load balancing, and graphing.

Rocksteady can be used in a number of different environments, but here on the AdMob operations team, we use it to determine the cause of events such as latency. We monitor requests per second (rps) and a slew of other metrics such as CPU and network traffic, then put them together in a prediction algorithm such as Holt Winters to predict a confidence band for the next arriving value. We then record an event whenever metrics are outside the band more than a certain number of times in a row. This is what we call auto threshold establishment. Now, if we have a SLA we really care about, such as response time, we can set a hard threshold, say 250ms. When response time slows beyond 250ms, Rocksteady tells us whether rps, CPU or network crossed their respective thresholds. Now instead of just knowing there is a latency problem, we can also quickly pinpoint the potential cause.

Rocksteady was briefly mentioned in Ignite talks at the 2010 Velocity Conference and Devops Day and now it's finally ready for open source. Let us know if you have any questions, and enjoy!

By Mark Lin, Operations Engineering Team
URL: http://google-opensource.blogspot.com/2010/09/get-ready-to-rocksteady.html

[G] FCC vote on white spaces lays promising foundation for “Wi-Fi on steroids”

Posted: 23 Sep 2010 05:57 PM PDT

Google Public Policy Blog: FCC vote on white spaces lays promising foundation for "Wi-Fi on steroids"

Posted by Richard Whitt, Washington Telecom and Media Counsel

This morning the Federal Communications Commission adopted final technical rules related to white spaces – the empty airwaves between broadcast TV channels – that we believe will pave the way for "Wi-Fi on steroids."

For several years now, the tech industry, the public interest community, and entrepreneurs have been clamoring for the green light to begin innovating and building new products for these airwaves on an unlicensed basis. Today's order finally sets the stage for the next generation of wireless technologies to emerge, and is an important victory for Internet users across the country.

Chairman Genachowski and his fellow Commissioners deserve ample credit for adopting rules that ultimately will put better and faster wireless broadband connections in the hands of the public. We're glad to see that the FCC appears to have rejected calls to enact burdensome and unnecessary constraints that would have made it more difficult to deploy useful technologies on these airwaves. Instead, the Commission has put forward common-sense rules that will help encourage innovation, while fully safeguarding incumbent signals from interference.

What's next on TV white spaces? We're hopeful the FCC soon will name one or more administrators of the geolocation database, and establish the ground rules for its operation. Once the database is up and running, new white spaces devices and tools can begin to roll out to consumers.

Nonetheless, this important step should be viewed as the beginning, and not the end, of crafting forward-looking spectrum policy for our country. From creating a comprehensive spectrum inventory, to investigating incentive auctions for TV broadcast spectrum, to revisiting the efficacy of spectrum sensing technologies, these are exciting times for folks to get involved in developing more efficient and effective policies to govern our nation's airwaves.
URL: http://googlepublicpolicy.blogspot.com/2010/09/fcc-vote-on-white-spaces-lays-promising.html

[G] Digital due process: the time is now

Posted: 23 Sep 2010 05:57 PM PDT

Google Public Policy Blog: Digital due process: the time is now

Posted by Will DeVries, Policy Counsel

The Electronic Communications Privacy Act (ECPA) is the law that regulates how government agencies can access a user's electronic data from an online service provider. Unfortunately, the law was written in 1986 and is woefully out of date for today's technology -- the provisions of the law no longer match people's reasonable privacy protections for their digital data.



My colleague Richard Salgado should know. He's a former Department of Justice lawyer and currently serves as Google's Senior Counsel for Law Enforcement and Information Security, where he oversees our team that evaluates and responds to law enforcement requests. Today he'll be testifying about Google's ongoing efforts to update ECPA for the digital age.

As part of our efforts, earlier this year Google helped launch Digital Due Process, a coalition of tech companies, privacy advocates, and academics dedicated to reforming ECPA. Since our launch, we've met with numerous members of Congress, as well as officials from the Department of Justice and several law enforcement agencies. We've also expanded our ranks, with more companies and groups from across the political spectrum joining the campaign. Today's hearing follows similar hearings before other Senate and House committees, and is another sign of the growing momentum of our effort.

As part of Richard's testimony, he'll explain that "a large gap has grown between the technological assumptions made in ECPA and the reality of how the Internet works today, leaving us in some circumstances with complex and baffling rules that are both difficult to explain to users and difficult to apply."

Check out Digital Due Process to learn more about our efforts to ensure our laws reflect the way we live our lives today.

URL: http://googlepublicpolicy.blogspot.com/2010/09/digital-due-process-time-is-now.html

[G] Web Analytics TV #12 - The power of the API

Posted: 23 Sep 2010 04:24 PM PDT

Google Analytics Blog: Web Analytics TV #12 - The power of the API

Lo and behold, it's another episode of Web Analytics TV. In this exciting series with Avinash Kaushik and Nick Mihailovski, you ask and vote on your favorite web analytics questions via the Google Analytics Google Moderator site and we answer them.

In this episode, we are delighted to have Rod Jacka as our special guest on Web Analytics TV. Rod is the Managing Director of Panalysis, a specialist web business analytics company and GA Certified Partner, Rod has experience in every web analytics tools, and if you need any consulting help in Australia then Rod's your man.

Here is a list to last weeks questions.

In this action packed episode we discuss:
  • (1:45) Why does you own site show in the Referring Sites report?
  • (3:15) Is there any way to export more than 5 columns in a pivot report?
  • (4:15) Getting app integrations migrated to async tracking
  • (5:55) Is there a way to grant read-only access to Website Optimizer?
  • (6:50) How to cross IDs set in Custom Variables with other GA data
  • (8:50) In which report can you find the PPC search terms (not bid terms)?
  • (10:20) Tracking links from emails that point to sites not being tracked by GA
  • (12:25) Thoughts about optimizing the async code
  • (15:15) If a user keeps clicking every 29 minutes, can a session last for 9 days?
  • (16:50) What could cause advanced segments on reports to have different totals?
  • (18:28) Why should people use other web analytics products when GA is free?
  • (20:50) Does GA track transactions in the same session or across session?
  • (21:08) How to get the goal funnel data through the API?
  • (22:28) What does "other" mean in the traffic sources overview reports?
  • (24:18) Is it possible to get segment-able motion charts?
  • (25:42) Why do product revenue and transaction revenue show different values?
  • (27:36) Where you can find unique visitor data in Google Analytics
  • (29:35) Why do advanced segments that match pages return other pages?
  • (31:22) Is it possible to export data from one account into another account?
  • (33:08) How to link multiple AdWords accounts to one Google Analytics account
  • (34:15) How to distinguish website referrals from desktop applications




And here are the links to the topics we discuss:

As always, if you need help setting up Google Analytics or leveraging the advanced configuration options, we recommend hiring a Google Analytics Certified Partner.

If you found this post or video helpful, we'd love to hear your comments. Please share them via the comment form below. And, if you have a question you would like us to answer, please submit a question and vote for your favorite question in our public Google Moderator site. Avinash and I will answer your latest questions in a couple of weeks with yet another entertaining video.

Thanks!

Post content Posted by Nick Mihailovski, Google Analytics Team
URL: http://analytics.blogspot.com/2010/09/web-analytics-tv-12-power-of-api.html

[G] Insight into your earnings Part I: Explaining the ad auction

Posted: 23 Sep 2010 04:23 PM PDT

Inside AdSense: Insight into your earnings Part I: Explaining the ad auction

"Why do I earn more money from some ads and less from others? Why do my AdSense for content earnings vary from day to day, or week to week?"

If you've asked yourself questions like these before, you're not alone -- we often hear from publishers that they're unsure of how earnings are calculated and why their earnings fluctuate. As part of our efforts to be more transparent with publishers, we're kicking off a two-part series to help explain these topics. With the help of Hal Varian, the Chief Economist here at Google, we'll show you how ads are targeted to your pages, priced by the ad auction, and translated into the earnings you receive.

Today, Hal will introduce you to the ad auction for AdSense for content ads, and explain both what it's for and how it works. Like a traditional auction, advertisers bid in our ad auction to show ads on your pages. The number and price of ads in the auction changes from moment to moment, based on how much advertisers are willing to spend and how they've set up their ad campaigns -- this is why we call our auction 'dynamic,' as these factors can then affect how much you earn.

If you're ready to learn more about the ad auction and how specific prices are calculated, watch the video below and visit our Help Center.




So what can you do as a publisher to ensure you're maximizing your earnings? Here are some tried-and-true tips to increase the amount of competition among advertisers in the ad auction for your pages.
  • Keep creating high-quality sites full of original content to attract more advertisers, and use Google Analytics to see which content is generating revenue.
  • Try adding popular advertiser formats such as the 300x250 medium rectangle to your pages.
  • Turn your channels into targetable ad placements to help advertisers identify and target premium locations on your pages.
  • Experiment to find the optimal locations for your ads, while making sure that your layouts won't generate accidental clicks.
  • Help advertisers find your sites by claiming them in Ad Planner. You can add descriptions and categories that describe your content, which will help increase the visibility of your ad units to interested advertisers.
To understand changes in your earnings, we also recommend reviewing our two-part blog series, 'Diagnosing Revenue Fluctuations.'

That's it for today. In Part II of our series, we'll discuss how smart pricing affects advertiser bids in the ad auction, and clear up some myths about how it works.

Posted by Arlene Lee - Inside AdSense Team
URL: http://adsense.blogspot.com/2010/09/insight-into-your-earnings-part-i.html

[G] Google Chrome Extensions at School: Get more done!

Posted: 23 Sep 2010 03:01 PM PDT

Google Chrome Blog: Google Chrome Extensions at School: Get more done!

Over the last two weeks on the Official Google for Students blog, we have been highlighting extensions that help students stay connected with friends or research and write papers. For the last post in the Google Chrome Extensions at School series, we will showcase extensions that can help you stay on task and make the most out of your time.

Posted by Koh Kim and Meredith Papp, Product Marketing
URL: http://chrome.blogspot.com/2010/09/google-chrome-extensions-at-school-get.html

[G] Import your files many different ways

Posted: 23 Sep 2010 02:38 PM PDT

Official Google Docs Blog: Import your files many different ways

A spreadsheet without data and numbers in it can get pretty lonely, which is why it's important to be able to easily import files full of data. Today we've improved the import dialogue to give you a full range of options of where to put that data. You can get to the new Import dialog from the File menu.

For example, when importing a .csv file, you can create a whole new spreadsheet, append to the current sheet, add a new sheet to your existing spreadsheet or even replace your entire spreadsheet with this new version.

Now with the new custom delimiters option, you can also specify what character to parse your data file with, giving you maximum flexibility when dealing with your data files.

And finally we spruced up the dialog with a preview pane giving you a first glimpse to see how your imported data will look in your spreadsheet so you can make any changes if necessary.


Happy importing!

PS: If you're using Google Apps for your school or business, join us for a live webinar on Monday September 27th for a review of all the new Google Docs features we launched this quarter.

Posted by: Ben Mann, Software Engineering Intern
URL: http://googledocs.blogspot.com/2010/09/import-your-files-many-different-ways.html

[G] What’s different about the new Google Docs: Making collaboration fast

Posted: 23 Sep 2010 02:38 PM PDT

Official Google Docs Blog: What's different about the new Google Docs: Making collaboration fast

This is the final post in a three part series about the collaboration technology in Google Docs. On Tuesday, we explained some of the technical challenges behind real time collaboration. Yesterday, we showed how operational transformation can be used merge editors' changes.

Imagine that you're doing a jigsaw puzzle with a bunch of friends and that everyone is working in the same corner of the puzzle. It's possible to solve a puzzle like this, but it's hard to keep out of each other's way and to make sure that when multiple pieces are added at once, that they all fit together perfectly. Making a document collaborative is a little like that: one challenge is coming up with a method to let multiple people edit in the same area without conflicting edits. A second problem is to ensure that when many changes happen at the same time, each change is merged properly with each other changes. In Google Docs, the first problem is handled by operational transformation and the second problem is handled by the collaboration protocol, which is the subject of this post.

To open a Google document, you need code running in two places: your browser and our servers. We call the code that's running in your browser a client. In the document editor, the client processes all your edits, sends them to the server, and processes other editors' changes when it receives them from the server.

To collaborate in Google Docs, each client keeps track of four pieces of information:
  1. The number of the most recent revision sent from the server to the client.
  2. Any changes that have been made locally and not yet sent to the server.
  3. Any changes that have been made locally, sent to the server, but not yet acknowledged by the server.
  4. The current state of the document as seen by that particular editor.
The server remembers three things:
  1. The list of all changes that it has received but not yet processed.
  2. The complete history of all processed changes (called the revision log)./li>
  3. The current state of the document as of the last processed change./li>
By carefully making use of this information, it's possible to design the client-server communication such that all editors are capable of rapidly processing each other's changes in real time. Let's walk through a straightforward example of how client-server communication is handled in a document.

In the diagrams below, the two outer columns represent the editors: Luiz and John. The middle column is the server. The oval shapes represent changes inputted by the editors and sent between the clients and the server. The diamonds represent transformations.

Let's say Luiz starts by typing the word Hello at the beginning of the document.


Luiz's client added the edit to his list of pending changes. He then sent the change to the server and moved the change into his list of sent changes.

Luiz continues to type, adding the word world to his document. At the same time, John types an ! in his empty version of the document (remember he has not yet received Luiz's first change).


Luiz's {InsertText ' world' @6} change was placed in the pending list and wasn't sent to the server because we never send more than one pending change at a time. Until Luiz recieves an acknowledgement of his first change, his client will keep all new changes in the pending list. Also notice that the server stored Luiz's first change in its revision log. Next, the server will send John a message containing Luiz's first change and it will send Luiz a message acknowledging that it has processed that first change.


John received Luiz's edit from the server and used operational transformation (OT) to transform it against his pending {InsertText '!' @1} change. The result of the transformation was to shift the location of John's pending change by 5 to make room at the beginning of the document for Luiz's Hello. Notice that both Luiz and John updated their last synced revision numbers to 1 when they received the messages from the server. Lastly, when Luiz received the acknowledgement of his first change, he removed that first change from the list of sent changes.

Next, both Luiz and John are going to send their unsent changes to the server.


The server got Luiz's change before John's so it processed that change first. An acknowledgement of the change was sent to Luiz. The change itself was sent to John, where his client transformed it against his still pending {InsertText '!' @1} change.

What comes next is important. The server received John's pending change, a change that John believes should be Revision 2. But the server has already committed a Revision 2 to the revision log. The server will use OT to transform John's change so that it can be stored as Revision 3.


The first thing the server did, was to transform John's sent change against all the changes that have been committed since the last time John synced with the server. In this case, it transformed John's change against Luiz's {InsertText ' world' @6}. The result shifted the index of John's change over by 6. This shift is identical to the transformation John's client made when it first received Luiz's {InsertText 'Hello' @1}.

The example above ends with Luiz and John receiving John's change and the acknowledgement of that change respectively. At this point the server and both editors are looking at the same document — Hello world!.

The main advantages of this collaboration protocol are:
  1. Collaboration is fast. At all times, every editor can optimistically apply their own changes locally without waiting for the server to acknowledge those changes. This means that the speed or reliability of your network connection doesn't influence how fast you can type.

  2. Collaboration is accurate. There is always enough information for each client to merge collaborators' changes in the same deterministic way.

  3. Collaboration is efficient. The information that is sent over the network is always the bare minimum needed to describe what changed.

  4. Collaboration complexity is constant. The server does not need to know anything about the state of each client. Therefore, the complexity of processing changes does not increase as you add more editors.

  5. Collaboration is distributed. Only the server needs to be aware of the document's history and only the clients need to be aware of uncommitted changes. This division spreads the workload required to support real time collaboration between all the parties involved.
When we switched to the new document editor, we moved from a very simple collaboration algorithm based on comparing versions to a much more sophisticated algorithm powered by operational transformation and the protocol described above. The results are dramatic: there are no more collaboration conflicts and editors can see each other's changes as they happen, character-by-character.

Well that's all folks: we hope by reading this series you learned a bit more about what's under the hood in Google Docs, and the kinds of things you need to think about to make a fast collaboration experience. You can try collaboration yourself, without signing in, by visiting the Google Docs demo.

Posted by: John Day-Richter, Software Engineer
URL: http://googledocs.blogspot.com/2010/09/whats-different-about-new-google-docs_23.html

[G] Tips for partners: Betty's recipe for metadata

Posted: 23 Sep 2010 01:19 PM PDT

YouTube Blog: Tips for partners: Betty's recipe for metadata

Our partners teach us something new everyday, whether it's about science, art or cooking. Sometimes they even teach our team YouTube optimization tips and how to better promote a channel. In a series of monthly videos, we're asking partners to talk about their top optimization tips for channels and are kicking this off with Betty from bettyskitchen. Betty joined the partner program last year and makes cooking videos with simple recipes ranging from cheddar jack whipped potatoes to healthy and natural granola bars, which all have one thing in common: they are incredibly delicious.



We asked Betty to show us how she uses metadata to increase her discoverability, choose her tags wisely, and come up with the perfect title. We hope you'll find her recipe for metadata just as enjoyable as her steps to make buttercream frosting.





Let us know in the comments section of Betty's video if you have great tips to share on using metadata or any other questions for Betty. We'd also love to hear how your videos have been impacted once you have used some of these tips to optimize your metadata.



Julie Kikla and Mahin Ibrahim, Account Managers, YouTube Partnerships recently watched "Baby Eating Watermelon."


URL: http://feedproxy.google.com/~r/youtube/PKJx/~3/1Xeee8YG2SM/tips-for-partners-bettys-recipe-for.html

[G] Imagery Update - Week of September 20th

Posted: 23 Sep 2010 01:11 PM PDT

Google LatLong: Imagery Update - Week of September 20th


Our latest imagery update is now live and ready for your viewing pleasure. This time around we've included high-resolution imagery of locations from more than one hundred countries! Check out some of my favorites from our latest batch below:

The Fountain of Diana the Huntress, one of the most representative sculptures of Mexican art, and main parade route location for the recent bicentennial celebration in Mexico City, Mexico.


Sioux Falls, South Dakota


The recently completed Raleigh Convention Center and site of this weekend's Mojo Musical Supply Southeastern Guitar & Amp Show in Raleigh, North Carolina. Turn it up to 11!

High Resolution Aerial Updates:
USA: Cincinnati, Denver, Greensboro, Raleigh, Miami, Monterey (CA), Portland (OR), San Diego, San Francisco, Sioux Falls (SD)
Mexico: Mexico City
Brazil: Rio De Jeaneiro
Sweden: Skara

Countries receiving High Resolution Satellite Updates:
Algeria, Angola, Argentina, Australia, Azerbaijan, Bangladesh, Benin, Bhutan, Bolivia, Botswana, Brazil, Brunei Darussalam, Burkina Faso, Burundi, Cambodia, Cameroon, Central African Republic, Chad, Chile, China, Colombia, Costa Rica, Cuba, Côte d'Ivoire, Democratic People's Republic of Korea, Democratic Republic of the Congo, Djibouti, Ecuador, Egypt, El Salvador, Eritrea, Ethiopia, Fiji, Former Yugoslav Republic of Macedonia, Gabon, Ghana, Guatemala, Guinea, Guyana, Haiti, Honduras, Hungary, India, Indonesia, Iran, Japan, Jordan, Kazakhstan, Kenya, Laos, Lesotho, Liberia, Libya, Madagascar, Malawi, Malaysia, Mali, Mexico, Mongolia, Morocco, Mozambique, Myanmar, Namibia, New Zealand, Nicaragua, Niger, Nigeria, Oman, Pakistan, Panama, Papua New Guinea, Paraguay, People's Republic of the Congo, Peru, Philippines, Russia, Rwanda, Saudi Arabia, Senegal, Serbia, Sierra Leone, Somalia, South Africa, Sri Lanka, Sudan, Suriname, Syria, Taiwan, Tajikistan, Tanzania, Thailand, Timor-Leste, Togo, Tunisia, Turkey, Turkmenistan, Uganda, United States, Uruguay, Uzbekistan, Venezuela, Vietnam, Yemen, Zambia, Zimbabwe

These updates are currently only available in Google Earth, but they'll also be in Google Maps soon. To get a complete picture of where we updated imagery, download this KML for viewing in Google Earth.

Posted by Eric Kolb, Geo Data Strategist
URL: http://google-latlong.blogspot.com/2010/09/imagery-update-week-of-september-20th.html

[G] Product extensions now available to all U.K. advertisers

Posted: 23 Sep 2010 01:00 PM PDT

Inside AdWords: Product extensions now available to all U.K. advertisers

Back In November 2009, we announced the U.S. launch of a new AdWords feature called product extensions. Today, we're excited to announce that product extensions are now available to all U.K. advertisers. Joining our growing family of ad extensions, product extensions are a way for you to enrich your existing AdWords ads with more relevant and specific information. Product extensions allow you to use your existing Google Merchant Center account to highlight your products directly in your search ads. When your AdWords text ad appears, and your Google Merchant Center account contains products that are relevant to the searcher's query, product extensions show the images, titles, and prices of your products in a plusbox under your ad.


With product extensions you can show users the products from your site that are most relevant to their current query. You're charged the same cost-per-click (CPC) whether a user clicks on your main text ad or any of the offers within the product extensions plusbox; however, you won't be charged if a user simply expands the plusbox without clicking through to your site.

Advertisers using product extensions have found that the additional product information has helped improve the performance of their search campaigns. For example, SonyStyle.com, reported seeing a 9% increase in conversion rates for their ads with product extensions.

It's easy to get started with product extensions. First, log in to Google Merchant Center and add your AdWords customer ID to your account. Then, simply log in in to AdWords, select the campaign and navigate to the Ad Extensions tab. To add product extensions to an existing campaign, click the 'New Extension' button. No need to create new campaigns or ad groups, update your keywords or change your ad text.

Product extensions are available to all U.S. advertisers, and now, to all U.K. advertisers, but remain in a limited beta outside of these countries. Over time, we hope to offer product extensions to all advertisers globally.

Posted by Dan Friedman, Inside AdWords crew
URL: http://adwords.blogspot.com/2010/09/product-extensions-now-available-to-all.html

[G] Tune in to John Legend and The Roots, live from NYC

Posted: 23 Sep 2010 08:20 AM PDT

YouTube Blog: Tune in to John Legend and The Roots, live from NYC

Tonight, John Legend and The Roots take the stage at Terminal 5 in New York City, in their first concert together since the release of their new album, Wake Up. The performance will be live streamed on YouTube at 9 p.m. (ET) at www.youtube.com/johnlegendvevo and directed by award-winning director Spike Lee.

Here's John and ?uestlove from The Roots to tell you what the night will bring...



The evening will feature songs from the album – covers of '60s and '70s funk, soul and reggae-tinged hits with socially-conscious themes -– some John Legend classics and a few set list surprises. Watch Legend and ?uestlove discuss their album inspirations and check out their favorite videos here from their YouTube homepage curation earlier this week.

And if John and The Roots weren't enough, they will be joined on stage throughout the evening by several special guests, including Estelle, Common, Melanie Fiona and who knows...perhaps an American Idol-turned-Dreamgirl.

This concert is part of the new "Unstaged" series brought to you by YouTube, American Express and Vevo. It will feature a pre-show from Spike, John, and ?uestlove that includes answers to the questions you tweeted earlier this week, along with the ability to choose your own camera angle, vote on which song they should play, and share comments with other fans via Twitter and Facebook.

Tune in for a memorable evening of musical collaboration and surprise guests, with a legendary director at the helm – all live from New York City.

Not at your computer tonight? Check back on the same channel for the archived highlights.

Dana Vetter, Music Manager, Marketing Programs, recently watched "Dar karta su Justin'u Bieber'iu :D."


URL: http://feedproxy.google.com/~r/youtube/PKJx/~3/B7sRrbBi2xc/tune-in-to-john-legend-and-roots-live.html

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