[birbal]

This is IMO a big deal because MSFT will now own business identity. Linkedin will become your business ID regardless of which company you join. Owning identity that travels across companies is incredibly powerful. This is a huge upgrade to AD. It's provisioned, verified (socially) and serves as a huge data source.

[tdkl]

Marvelous, even less incentive to join it then, my "personal ID" gets tracked over the web enough already.