A friend of mine is finishing law school and preparing for the bar. He has an ethics exam to take, and since he is a WoW player, I am worried. There are presumably ethical rules against charging more than one client for the same work (although it is normal billing to do work for multiple clients in the same hour and round the charge for each up to a full hour). MMOs teach us that you should always get paid twice. If you are killing a monster, it should be for a quest or in a dungeon on the way towards a boss that drops something you need, ideally one that counts towards an achievement and drops components you need for crafting. It is even better when you can find multiple quests for the same enemies, multiple achievements that need them, etc. This poor law student has years of Skinner box training to undo.