Looks like WebRTC is getting here good enough that we should add it to our arsenal.
Not available yet for Safari or IE (except through Chrome Frame, being discontinued)
There are companies making it easier sort of like twilio makes voip and sms easier. I think I even read twilio was messing with adding it to their apis:
and meteor and angular folks are playing with it:
and lots of competition already if you want to create that great webex solution / skype replacement:
but I suppose we could create one geared to use by researchers…