A bit late to reply - it's coders who ruin the fun. Controlled or not, their application will eventually end up on forums due to the oh-so-loving people that like to 'share'
Then the fun begins. I have a huge respect for online games that know how to control the wave of so-called cheaters (e.g.: PunkBuster, GameGuard, XTrap, HackShield). There lies the real challenge - unpatching detected hacks
Sorry for the grave-digging...