http://blogs.technet.com/grahamtwatson/archive/2008/09/11/social-bookmarking-on-msdn-and-technet-a-collaboration-tool.aspxMicrosoft is opening up the MSDN , TechNet , and Expression sites to the worldwide technical community. Social bookmarking is an important element of the overall vision , enabling technical professionals to easily share their web favorites, find and connecten-USCommunityServer 2.1 SP1 (Build: 61025.2)