This was once mentioned somewhere else, but I'll bring it back to the surface.
For an alternative search method, put "site:xixax.com" in a Google search. So if I wanted to find Xixax posts on Mates of State, my search would be "site:xixax.com mates of state
The catch is that it can't search the member-only forums, because they're not available to the Google bots. Idle Chatter, for example.
E: Well crap. That search doesn't find my July 29 post on Mates of State in this thread
. Maybe the bots haven't come around in a while.