Filter gold seller website names

Now, before anyone says "but they'll just put different ascii characters like è é etc, no, they can't. I tried this in game, and it says you can't use non-standard ASCII. So if they simply put in the NAME of the gold seller websites into a filter, it would screw most of them over and stop the incessant spam in-game.

The most they could do is put a single space or standard ascii between characters, so just type those variants into a filter too, and tada.