As Joe points out, once the handful of narcissists, trolls, and AOL chatroom types get the message and either find or are shown the door, the rest is pretty easy. We get very few crooks here, but on the odd occasion they surface, Johnny is good at dropping the hammer on them. The biggest challenge overall is moving mis-posted threads to the correct forum. You'd be amazed at how many people post Wanted ads in the For Sale section.
What that tells me is that the vast majority here, by far, have no problem conducting themselves well and using the site as intended. That makes it pretty easy for the moderators.
Thanks to everyone who contributes their time and knowledge here to answer questions, post designs and ideas, or help figure out the impossible. The technical value you add to the site is immeasurable, and is the real reason it exists. To encourage and improve the on-air AM experience, not replace it.