There are hackers and then there are hackers, the way I see it. The crappy ones can't take advantage of the fact that you are uploading OR downloading anything. The good ones don't need to have you doing either -- just have an available port.

I think it's just good old-fashioned B.S. control games: I will take from you and get a kick out of not giving anything in return. Sound familiar (don't get me started on that!)...