We do have the public broadcasting like Justin.tv and UStream but we also have a focus on creating networks of friends that you can chat with and video call.
When broadcasting you do have the option of opening it up to the world like the other sites but you can also limit the broadcast to just friends or even just specific people.
More stuff in the works but we can't really talk about it yet :-P
I saw the comment re: wowza, you guys aren't going to use p2p over rtmfp? Seems pretty essential if you want to nail the person to person calling with Flash.
When broadcasting you do have the option of opening it up to the world like the other sites but you can also limit the broadcast to just friends or even just specific people.
More stuff in the works but we can't really talk about it yet :-P