simple... you make a pre-DM position where you can't warp, can't attack, have infinite health and the like, and have the whole item thing.... but, you have a staff person/ really reliable player tag along with that person or the pre-DM holds a RPG...since everybody hates corrupt staff, they'd report any insane doings... especially if like the 3 people that were RPing suddenly mass "selling 100 diamonds" also, you have to check in with a staff member every once in a while and use the /drop all command so they can see whether or not you have been abusing... then, after a while they get full DM privelages....
in truth, there is no way to prove if somebody'll go corrupt... but if stefan were to think that everybody is corrupt and evil (legalism
) there would be no graal....
"I like you unimaxd, but i think you could go corrupt.... sorry, I don't want your NPC server, even though i have checked it several times to make sure nothing was wrong..."
of course, something was wrong... it's hooked up to a cord that can be easilly tripped over XD