Has it been suggested yet that SE implement some sort of client-side chat filtering in-game? I've been told XI had a feature that allowed you to make changes to your client's chatlog preferences that would prevent certain key phrases from making it to your chatlog. i.e. if someone sent you a /tell that had "000k" in it, or something along those lines, it would simply prevent you from ever seeing it. This would allow players to take the fight against RMT into their own hands by finding new ways to implement certain phrases as the RMT try different measures. I think this would help to battle RMT far better as a preventative measure rather than trying to keep up with it (especially when the team only has 3 people).

Then perhaps allow players the option to auto-refuse incoming friend requests.