Just two quick comments on this…

1) As an analyst, I need to understand what the movers and shakers in the industry are doing with open source – Microsoft is an important vendor to watch in this regard for many reasons – Windows Server positioning, interoperability, ISVs, document formats, etc.

2) No principles were betrayed. I was invited to speak and I accepted. Who could turn down the opportunity to talk about open source at Microsoft?! As is customary, the organizer paid for travel expenses.