Statistical Analysis Q&A is a web page dedicated to exchange questions, answers and ideas primarily on statistics. See http://stackoverflow.com/ to get the general idea what I’m talking about. You still have a chance to sign up for closed beta testing. If you miss it, no worries mate, after about a week, it will be opened for the whole world to see.
See also Tal’s writing on the wall of R-statistics blog.
Just recently, a MetaOptimize page has been launched to serve the statistical needs of people everywhere. The page has been building up steam but I’m still not sure which way it’s gonna go. I hope MO and SA will compliment each other and will not get caught in the stats feud.