Well, a Wiki isn't an FAQ-o-matic (which I agree was not great). I was thinking more of a random scratch pad developers can use to note down useful tips, win32 oddities that don't fit better elsewhere, quick notes on bugs and so on....
This really sounds like something that won't be maintained or contain enough information to be useful. Lots of folks spent a lot of time over the past year consolidating docs and cleaning everything up. Lots of developers don't even take the time to write up an email on this stuff, I can't imagine putting a web interface on it would change that.
-brian