SPIM - Spam on Instant Messenger (or something similar).
Lately there's this guy on MSN that keeps sending me lists of hardware prices.
I don't really remember why I added the guy, but I believe he's one of those guys who at some point had Perl questions and came to me for help.
The interesting fact is that when I tell him "Look, I'm not going to buy anything from you!" he says something like "Why?" and then pastes another list of prices...
Before getting rid of him, maybe I should take the opportunity to try and find out why these people doesn't understand they're annoying others.