Microsoft is joining DataPortability.org who's mission is:
"put all existing technologies and initiatives in context to create a reference design for end-to-end Data Portability. To promote that design to the developer, vendor and end-user community."
Check out the full post here.
For some background on what the Windows Live platform has from a data & delegation point of view check out http://dev.live.com/spaces/photos and http://dev.live.com/Contacts