Actually, I used to be a mod on a busy forum and the first thing I would say to those that haven't is to NEVER under-estimate the stupidness of some and the pettiness of others and EVERYONE, at some point, acts like an arse. If you are constantly on the other end of this, as moderators are, then you can be forgiven for occasionally being over enthusiastic on the infraction button but then you'd be amazed at how upset people get from being given a couple of point - It IS NOT THE END OF THE WORLD and just stop being an arse.