Microsoft's execs are watching the nascent blogging market and are trying to do the right thing. So far it's been "safe" to go with RSS 2.0. But, now that Google looks like it's going with Atom, the "safe" choice isn't safe anymore. What should MSN do? What should MyWallop do? What should MSDN do? What should Microsoft.com do? What should Sharepoint do?
My first response is now Microsoft's tools will need to spit out both formats, since that's what the market will demand in the short term.
Hey, since we're gonna have to do two formats, why shouldn't Microsoft invent a third? Yes, that's a loaded question. Answer carefully. Like I said, all the stakeholders will read your responses.