OnTheAir vs. Airtime vs. Hangouts... Is Live video exploding?

The thing about artists and politicians, etc, can also be done, and has been done with Hangouts. It was also called On Air before these guys had the name. I don't know why Google is still not allowing everyone to use that feature, though.

They are built on TokBox, which seems to be getting some traction as well. Will be interesting to see if it's just one killer app or many that emerge.