I feel that the problem is that the new members aren't reading the rules. I must admit that when i sign up to something and it asks if I've read the terms and conditions/rules, i usually tick yes. Maybe if there could be an automatic message sent to new members, after signing up, welcoming them and just giving them a couple hints to make their stay more pleasant.
eg. Welcome to rollaclub, please take the time to read the forum rules when possible. Just a hint, when posting, try not to use SMS talk and try to check you spelling, punctuation and grammar. I'm sure you'll love it here.
Rollaclub Mods
Just an idea.