This morning, the big news out of VoiceCon (news on the last day… yay!) was IBM and Microsoft’s promise to achieve true federation between OCS and Sametime. That’s good news for unified communications (although I have to side with the folks who wonder why “federation” is an acceptable solution, when “open-standrads-based interoperability” is really what’s needed). But it’s not news to enterprise 2.0 vendors and users, for whom open, shared access is table stakes. Think about it: When it comes to communication and collaboration, you can’t know in advance who you need to work with; you need to know that at any given time, you can work with anyone you choose.