Agreed - definite 'strategic' rationale for the purchase. Can't get there by any conventional valuation method. But to put things another way, do you believe that having Github as a Microsoft property (or the insurance that buys) is worth 1% of the company? Not too hard to get to big numbers when we're talking about a 3/4 trillion dollar company.

This one kind of feels like Skype, in that it felt like they overpaid there as well (I remember thinking that Silverlake had performed a masterful coup with Skype) ... only time will tell whether Github loses their mojo as in the Skype situation. I'm not a skype user, but my general sense is that the service has been completely eclipsed by everything else in that space.