I'd trust the s-con forums as much as I'd trust craigslist. 

yeah, but you never know the kind of person you'll end up with. And there are some weird people I'm sure you wouldn't want to room with. Safer to room with someone you know, or have a vauge idea of what they're like. Wouldn't want some nerdy little otaku getting the wrong idea. And the more people in a room, the less likely something weird will happen too. Unless massive amounts of alcohol are consumed. Who knows what could go wrong then. But good luck! Have fun! Bring pepper spray!

The s-con forums also have a section where you can look for roomies.

Find me in the game room Friday afternoon and I'll see if I can help you.  I'm still not 100% sure what I'm doing for a room at this point myself.

edit:  Check here: http://www.greentortoise.net/