The reason those people spam those stupid anal links is because they think they're funny and being unique somehow. If they were all stuck in a room together spamming anal links, they would
A) Not be annoying anyone so that goal would not be accomplished.
B) They would not feel unique anymore as everyone in the channel is spamming the same stupid crap.
C) I believe it's an attention issue.

But take it how you will, I report senseless crap constantly in trade or even in battlegrounds. I am just a cynic.