Global Audio and Video collaboration is a work in progress
Kevin nails it. Read the whole thing!
From Epeus' epigone - Kevin Marks weblog.:
QUOTE
I managed to get a live broadcast up from Bar camp so far-flung friends could watch and react via IRC, but attempts to get video out of Foo camp were stymied by their NAT and router. Global textual collaboration has been here for a while; adding video and audio is still a work in progress.
UNQUOTE