A lot of this has really been blocked by Google before; when they stopped interop with XMPP. XMPP was meant to cross company borders and allow video/media to be built on top of that (with something like RTP & h264).
+1 for having a business model. Too often I see great tools disappear because they got acquired, ran out of funding or something. I'd love to see this be an example of a tool that makes enough money to sustain it's team.