This is an issue I see come up from time to time that always bothers me. It's when people start using insults in their posts.
The Danbooru forum is not a general forum. You don't talk about movies you seen or current events or funny things that happened to you. This forum is specifically about the site and how to best organize and improve it.
Given such a restricted topic, I see no reason why anyone should call another person an idiot, a faggot, a retard, or whatever. If you start resorting to insults, then I believe it's a sign that you need to step away from the keyboard and take a deep breath.
I've previously taken a lazy stance on this, but given that I've never seen an insult-laden post that I consider to be good, I've decided to change my mind. Therefore, I want to propose a new rule for the forum:
If you insult another person on the forum, you are subject to a ban. This rule applies to everyone, including janitors, mods, and admins. Even unintentional insults will not be tolerated. I don't care if the other person really is an idiot and is acting incredibly obtuse. Don't say he's stupid. Please use arguments and counterarguments. There is no need for any sort of personal attack.
I will be the sole judge of whether an insulting post is ban-worthy. Bans will probably last 3-7 days. If you believe someone is breaking this rule, send me a message.
This is what I'm proposing.