This is anarchy: "ChatRoulette.com". (You can google it. It's potentially NSFW.)
The site is the creation of a Russian teenager. (Link to NYT) But it was this piece in the New York magazine that sort of brought ChatRoulette into the mainstream.
Enjoy. Or don't.
I may not have been as creative as that Russian kid but I did figure out how to turn off that sneaky piece of shit software feature called Google Buzz. (It's a tiny link at the very bottom of your Gmail page.) That must easily have been the most evil, the most insidious, the most careless software product introduction ever.