It does not seem all that impossible now, now that Skype has been integrated into Facebook. From what I hear, they have stripped down most of skype and provided javascript apis for the facebook web app.
Before that, I always used to wonder how could one take all of signaling protocol (like the monstrous SIP, XMPP etc) and media (RTP) and cram all of it into the browser.
Before that, I always used to wonder how could one take all of signaling protocol (like the monstrous SIP, XMPP etc) and media (RTP) and cram all of it into the browser.