Killsteal

Kill stealing is just what it sounds like- one player taking a kill away from another player who has done all the work. It is a problem faced by many MMORPGs. Guild Wars has done away with this problem by making all Explorable Areas uniquely instanced for each group that enters it, so there is no camping of monsters spawn spots. Additionally, players get no bonus from killing a monster (or enemy player), all experience and loot is shared by the party.