Trade Chanel Spam

I report people in trade chat for spam, yet two weeks later there they are still spamming away.

I have several toons so putting each spammer on ignore is annoying.

I don't know about everyone else but I don't enjoy reading the spam.

Such as people who talk about how doing drugs is cool and that guy who is always using trade to Evangelize (Preach) his religion. Or the disgusting people with thier incest talk.

I miss out on the real trade chat because of all the spam.

Basically, my question is this :

What's the use in reporting spam if the spammer is allowed to continue?