To be honest, I've long worked with Rob and Don and others, and I'm delighted to see the strong contribution... and to continue working with them, on ODF, and now increasingly on OpenOffice....
Open source leads, it would seem for MSFT, not only to the appearance, but quite plausibly to the reality of demonstrable security (if not necessarily superior).
This is immensely encouraging. I've worked--or tried to--with and in Portugal for many years trying to move the public administration to open standards (ODF) and also OOo, as the best implementation of the ODF.
That there is finally traction is great; but I wait to see the actual results before I get really jubilant.