I found a site today called Sharepoint Overflow (.com). It looks like StackOverflow, but I can't make out if it is part of the StackOverflow family or not. I don't want to login and create an account on some rogue site.
From the home page source:
So it looks like it is a SE 1.0 site.
It will eventually be shut down as the migration to SE 2.0 progresses.