I had the same thought. It's a very impressive interface, but I couldn't find an "About" link that really says what it is, and it wasn't terribly obvious (at least to me). I see what looks like twitter stuff, I see comments, and I see links to news stuff.
But perhaps an "About" clicky would be helpful.
But overall nice job with the interface. Very slick.
As someone trying to make a video for "the product" with zero video editing experience, let me say that I no longer expect it from others. It's enough programmers are even making the UI useable.
To be fair it does say: "Following People at Real-World Events in Real-Time" on the front page and then lists the services it uses to find the information.
It looks like a real-time news aggregation service.
Very good, would benefit from a search bar on the homepage and integration of real time comments from social sites such as digg, reddit and even Facebook public profiles.