Since it's built on Adobe Air (basically, Flash), I assume they're using its built-in P2P video library. I've used it before and found it to be quite good. It's

Since it's built on Adobe Air (basically, Flash), I assume they're using its built-in P2P video library. I've used it before and found it to be quite good. It's what Chatroulette, or any other web based video chat app uses.