I just want to make a friendly suggestion. Perhaps "Trolling and excessive flaming" should be listed on the rules under "Things that will get a user banned", just so there's no question about the rule.
Maybe the definition of an internet troll (or trolling) can be worked into the rule.
Definition of Troll:
A troll is someone who posts inflammatory, extraneous, or off-topic messages in an online community, such as an online discussion forum, chat room, or blog, with the primary intent of provoking other users into a desired emotional response or of otherwise disrupting normal on-topic discussion.
Thanks and have a great day.