We are counting down the hours to this evening's U2 concert at the Rose Bowl stadium in Pasadena, CA. The live stream begins at 8:30 p.m. Pacific Time (3.30 a.m. GMT), and YouTube users all around the world can tune in. (To figure out what time the concert starts where you are, simply click the time converter here and select the name of your country in the pull-down menu.)Once the show starts, scroll down on U2's channel for a Twitter gadget displaying real-time comments about the webcast. If you Tweet from this tool, you'll see that each message is pre-populated with the hashtag #U2webcast, instantly plugging your comments into wider discussions about the show.For those of you who miss the live event, the full performance will be re-broadcast two consecutive times after it ends. It will also be archived as a video on the U2 channel -- so there's really no excuse to miss Bono's distinctive wail, the Edge's guitar mastery, the roll of Larry Mullen's drums, or Adam Clayton's thumping bass lines. Let this preview whet your appetite for the experience up ahead...
Today, Comments Search moves into Test Tube, the place where our engineers and developers test out new features and gather data and feedback before pushing them out to a wider audience. This feature allows you to search the comments people are making on YouTube in real time. The full comment will appear on a continuously updated results page, and "trending topics" indicates the hottest topics of conversation on YouTube at that particular moment. Comments Search is a way you can find out what YouTube users are saying about everything from the news stories of the day (below, see results when we typed in "balloon boy") to your individual channel or brand.So try it out, enter your feedback here or comment below, and help us get this feature ready for the masses. We're always working on new ways to enhance search across YouTube and give quick and easy access to the information people are looking for.Jamie Davidson, Product Manager, recently watched "Strange Cloud Over Moscow Oct 2009."