TechWack reports The recent Google+Yahoo! advertising deal said "Yahoo and Google agreed to enable interoperability between their respective instant messaging services, bringing easier and broader communication to users."

Hmmm. Microsoft, AOL, Yahoo!. Should put together a pool for when MySpace, facebook, and Tencent's QQ join the federation? After all, they have it easy with centralized IM services. Skype, on the other hand, would need to construct a central gateway, or expand the one they use with MySpaceIM.