I was browsing http://blogs.msdn.com/ scanning various blog posts on MSDN Blogs and found a blog entry by Buck Hodges's about enhanced msdn.com search. Buck's blog entry linked to http://lab.msdn.com/search/ which allows searching the following directly: msdn.com, MSDN Forums, Codezone, and MSDN Blogs.

It's interesting to compare 
search MSDN Blogs on Windows Live versus going to http://blogs.msdn.com/ to use the Community Server search engine directly to search MSDN Blogs directly on Windows Live.