I’m just going to quote from TechCrunch on this new development, though I’d recommend you read their entire post:

TokBox, the web-based video chat application, has announced that it has partnered with EtherPad to bring document collaboration straight into TokBox. Now, all Tokbox users can simultaneously collaborate on one text document or “pad”, while chatting in a video call.

I’ll add new of this development to The Best Online Tools For Real-Time Collaboration.