But apologize for a second... If the contributors do not need you to remove them? There are other people to whom they can serve, if they have this degree in the forum there will be a reason you do not believe? For example, they are available on the forum to help and maintain the order against insults to users/chat/volunteers. Let's stop saying scams, i think xat is doing fine this way. The word itself says "contributors", if you do not know what it means to search the dictionary.
I'm saving you the trouble of looking for the definition: