Here's another stupid idea from the people who brought you BEER MILKSHAKES! (Red Dwarf in-joke)
Few people want a karma/reward system, and mostly I agree as that can be totally abused. But how about a sort of "member of the week or month" thing, where a member is recognised for the good they have done over the last week/month in promoting a healthy atmosphere in the forum, staying out of drama, sorting things out, creating decent threads etc etc, like a sort of example of the sort of person we want here? It could have its own thread and when people check and see who's been voted (presumably by a panel, maybe not just mods, maybe a PM vote system but the votes would have to say why they're being cast for that person) others might then want to aspire to that sort of behaviour and it might promote, you know, good vibrations?
No? Then I hope you all die in a train crash!
Oh for the love of ... anyone who doesn't realise that's a joke needs to go into hospital now and have a sense of humour implant. It's a simple procedure and your medical insurance will cover it.