Idea: Make RMT spammers killable after 100 reports.
After 100 reports have been submitted against an RMT spammer, the character becomes attackable by anyone for one hour.
The count would be displayed next to the character name for 24 hours, and logging off would not clear it.
After the count reaches 100, players in the area could have some fun finding the spammer in order to kill it, after which, it stays dead for 24 hours.
It would also give us the satisfaction of doing something about them other than reporting without immediately noticeable results.