I think it would be great if Runescape had a "Report Good" button, by which players can get good marks for helping other players - telling them where to go, helping them with quests, etc. so that they can offset the black marks that they get for doing bad things. The reason for this is because not all players are bad; I know personally that when I'm having a bad day there are things that I say or do to other players which may hurt them or make them feel bad, and on good days I feel like helping everyone.