I've been cruising CL in search of a cheaper commuter/touring bike. So far haven't found "the one" but I always cross-reference this Portland area Stolen Bike Listings site. Also, as long as you have good "methdar" you will probably be able to tell if the person selling the bike just needs $50 to go buy more drugs or what.

PS: I'm also at PSU and waiting for the next two weeks to be OVER!!!