MSDN launched MSDNWiki a while ago
I really like the idea of MSDN Wiki.
An API is rarely just an API. There is an associated history, like the background, the design choices, the limitation, the alternative, usage pattern etc. Unfortunately when an API is documented in MSDN, the context is lost (at most places). The result is misuse the API.
With MSDN Wiki, now I can capture the associated context in my blog, and link it in the MSDN wiki site.
That is exactly what my first contribution to MSDN Wiki is: Link my article on ReflectionOnlyLoad* APIs in MSDN document for Assembly.ReflectionOnlyLoadFrom.
I'll contribute more to MSDN Wiki when I get time around.