If I had to administrate something like this forum, I would put better rules. To be specific, some unwritten rules would become written, as well as other changes such as:
Not being an starfish would be a requirement. Obnoxious or unnecessary formatting (like making more than one word in a post 50pt, or random sizes that aren't roleplaying an insane person or something) would be banned as well, though the punishments would be lighter on this subject. This does exist as a rule, but probably falls under spam.
Most importantly, I wouldn't cage myself in the rules like Badspot does, which explains how some people were able to slip around rules like eels. This would shorten the lifetimes of most trouble users by at least two months, and up to half a year or a whole one.