Microsoft has been running forums & newsgroups, to provide community support for all its products. In fact, its these very forums that form the breeding ground for many of its MVP's, where they are among the top contributors !
Initially, Microsoft used Community Server from Telligent to host its forums. But now, Microsoft is revamping the same, on to its own code. There seems to be an entire Community Platform emerging with blogs, tags, forums & wikis within Microsoft. The migration from the old to the new will be done in a phased manner.
Microsoft, Community, Board, Fourm, Launch