Planetside (Score 2, Informative)

I personally like the planetside method of PVP grief. Everytime you hurt a friendly you are punished with x amount of grief points. When your grief reaches a certain level the weapons in the game dont work, u cant buy vehicles, etc, etc, basically u can run around and act as a target for everyone else until your grief goes down. This is calculated as x points/hour of realtime. For me this is an effective technique. You want to run around and kill friendlies, then u pay the price. Simple answer is if they take away from another players fun, then take away theirs and let everyone know that they are in the badbooks at the moment.