I found the link to the article here
College Magazine - My Roommate, the Drug Dealer
Some interesting comments, from flaming the author to supporting the idea that things like this happen. It was more than 20 years ago that I lived in a dorm. Some kids did drugs, sure (one shot himself on an acid trip). But we didn't need a reason to change roommates and rooms other than wanting to room with another friend. We could only do that once every so often, but were supposed to be adults paying for our room and board...they didn't really ask why we wanted to live with so-and-so.