In last days, spam has had a sort of a boom in AVA section. This could happen to all other sections so:
-I suggest making mandatory the forum rules reading.
-How?
Well, when you are registering in some websites, they have a list of rules and terms of agreement, right? Some of them have a timed button that you can only click and proceed with the registration after the time has passed. I think that a 1-5 minute timer with the forum rule when new users resgister would be a nice way to make them read the forum rules. Since they have to wait, the chances that they might read the rules are bigger than just having a sticky post about rules on every section. This could reduce every kind of rule breaking and make the moderators job much easier.
I hope you like my suggestion and don't say it's useless crap if you don't like it. I have be submited to this method in other websites and I read the rules, sometimes more than once.