I wrote a few paragraphs but don't want to talk past you, that sounds fine for a secure channel, but are you going to warn users against using Skype for example? I mean, I don't know if someone has tried Google Docs with Skype, but I know I posted a GDoc link somewhere a while back only to have a bot pop into the doc. So, if the same happens with Skype, someone "joins" this shared resource... and you hit "Transmit"... who or what received it?

Of course, Skype's bot won't implement WebRTC.

They'll implement the proprietary blend that they told no one they were working on until everyone else was making serious progress with the implementation that everyone else collaborated on...

http://html5labs.interoperabilitybridges.com/prototypes/cu-r... [hm, they've actually put some money where their proposal is, I'll have to check into this more]