Only the other day patent 'analyst' Florian Mueller disclosed funding from Microsoft to write a report on FRAND licensing. He then subsequently admitted that he and Microsoft "...have worked together more than once, but that because of a confidentiality agreement with the company, he can’t elaborate on the details of that relationship..." [1].
Microsoft never really changed their spots, they just switched tactics.
[1] http://paidcontent.org/article/419-is-patent-expertblogger-f...