I remember we had a Mod prior to Duane that didn't play well with the rest of us, I don't think he lasted 6 months. Duane ended up taking his place. With that being said, I believe the Gibson administrators keep an eye out and step in if necessary.
I can't remember who the original Mods were.
I do remember one guy that let the job go to his head. He went as far as to sell himself to B.B. King's folks as a Gibson rep and had scheduled an interview with B.B. It went south quick when they realized he was just a moderator for the forum.