As Boris said at BarCamp Amsterdam (if I may be so bold as to paraphrase him), Jabber and RSS and Atom are the formats and protocols to watch; this is just one more proof point.
Sorry, couldn't resist the Christmas themed title. What am I talking about? Well, the JINGLE press release* came out yesterday, announcing the official Jabber Extensions Protocols (JEPs) for doing multimedia over Jabber, or XMPP as the IETF approved protocol is officially known.
Here's the part where we learn that this is in reality a way for everyone to plug into Google Talk: