Just screenshot and report any and all blank chat lines you see in game. It's a warnable and bannable offense to use any language other than English in public channels.
I have no problem with players I can communicate with--without requiring a translator.
If you are asking if it's allowed to sell the purple/blue items that a Lord drops in Silithus for in-game gold, then yes, that is allowed.
The GM team.
I think what guy asked is "Is it allowed to run a bounty group?" It seems that he want to get people work for him in the game and pay people gold for gears.