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Wow. Almost.at aggregates real time posts about specific events from Twitter, Flickr, YouTube, and Twitpic. TechCrunch has a write up. Looks like that could be useful.
It also interesting from a design point of view. That is a very sophisticated, desktop-like, interface. You can also download it as a standalone application of OS X. It's made using Cappuccino which basically makes it possible to program to Apple's Cocoa frameworks and have the result come out as web ready javascript + HTML. Very slick.