Craigslist works well for colleges with small towns. Thus the load on the classifieds stays low enough to keep track of. Bored students can then just surf the for sale section. In bigger cities it stops working so well, but really, college students mostly have crap, so I wouldn't buy from them anyway. I like to buy from yuppies who are getting rid of their sorta-used couch to get a new better one. They practically give it away.
