I heard - overall it's probably a good thing for me, and a bad thing for the community. I'm already tied into MS platform and services, after 15 years of .NET development I'm bound to their tech. TFS git is pretty good, but lacks full tooling, I expect they'll try and roll Github in place of that, provided a nice jump in functionality.
For those that hate it, of the likely Github eaters (I'd suggest you've got Google, Facebook, Oracle, HP, Amazon, or maybe SAP as those big enough to eat it) which would you guys have prefered?