Here is my announcement, anyone who bad mouths or gossips about other users behind their backs, even if the gossip or bad mouthing is going on this or another Wiki, its still forbidden, gossip is bad and is only looking for trouble, and bad mouthing people behind their backs, is just as worse as gossping about people behind their backs.
If anyone starts bad mouthing or gossiping about others or you, that you are aware of them doing this, then you best tell them to stop or back off, if that doesn't work, you can report the person to an Administrator about it, and see what they can do, if they keep on going, then you have to sort it out amoungst yourselves. In a Civil way, if possible.
Remember, even though someone is bad mouthing or gossiping about you, don't stoop to their level, turn the other cheek and say "Please don't do that" If that has no affect, ignore the person who is bad mouthing you, and if they keep on doing it, like I said, report them to an Administrator. Hopefully, things will be sorted out with out there being a fight started.