I stopped playing Minecraft on a public server because of griefers. While this guy can rationalize his antisocial behavior as "people need to lighten up", it's

I stopped playing Minecraft on a public server because of griefers. While this guy can rationalize his antisocial behavior as "people need to lighten up", it's not really appreciated by others, who often invest their mental concentration to the game. Maybe there should be some sort of general gaming account (say Steam could have that), like a credit score. People who troll others would be more likely paired up with other trolls, if they so much enjoy company of "lightened up" people.