One of those guys, starting with the letter "R", (yes you know who he is) was maybe one of the main reason for the death of Gilrain, even before other servers started to loose players. Don't underrestimate what one guy who spams gold for a living, with 5 accounts and an army of alts can do to one small server. Of course he got a lot of help from his buddies and their kin did pretty much everything organized and they have no problems finding people to follow them. Slowly they grow.
Just keep in mind, if nobody gave them any attention they would be long gone. Means you should never speak to them or about them in game or in forum(hopefully they don't read this). Report them and they will just get yet another ban which they will return from later or you could just ignore them. If they send you tells, just tell them to f*** off and put them on ignore :P If you raid up to gank them they will just log off or log their creeps.
Yes some people just play this game to be hated as much as possible and to make people ragequit. I moved to Eldar because the community here was very good compared to certain servers. Be happy with it.
Hopefully this is the last time I see them mentioned. Don't give them reasons to play this game.