LoTRO Lord of the Rings Online Exploits
Exploits are far more common than standard cheats for MMORPGs. There are not so much bugs in the system, as they are design traits with unexpected consequences. Game designers can’t test every possibility presented by a game. The thousands of players who swarm their servers can explore all possibilities and find the methods of playing the game that disrupt the balance in their favor.
Of course, the nice thing to do is report the exploit immediately, so that Turbine can correct the problem and keep the game fun for everybody.