Basically, you set a bounty on someone. Lets say you just got killed by some random cool person named sixzoseven. You hate that person because he killed you before you could craft a shiny sword. Since you are a good person and will not use foul language, you set a bounty on his head by typing "/bounty sixzoseven 40" (No quotes) (40 is the amount you want to set. The minimum is 10) You will then have to confirm this by typing "/bounty yes" (No quotes) All of the players in-game will see this and think to themselves, "Hey! I want to get 40 points! I am going to hunt down and kill this person!" By setting a bounty on someone, everyone will want to kill that person. People might even fight over each other for the points! Whoever gets the kill, gets the points. But lets be more realistic here, shall we? sixzoseven uses his awesome enchanted diamond sword to kill everyone and win the game. No one gets the points and the points are discarded.