Don't intentionally start a chain post, don't take part in a chain post.
Don't play cop, don't go around reporting every single thing or you will lose your report button.
Don't talk in color, you might be tempted to do this however it is annoying. Use colors meaningfully
If you are you going to take time to open a thread you should at least read what the OP has said. Don't reply with a Too Long Didn't read post, this is waste of your time, the ops time, the server machines time, and waste of carbon.
Do not over use emoticons.
All things are taken serious unless otherwise mentioned. Use cookie emoticon for sarcasm.
Don't post super large images. If its past 800x600 okay, but if it eats up the whole screen don't post it. You'll lag everyone to death and cause the worlds worst page stretch. Also don't post a long list of pictures.
Keep brony and furry stuff in their respective containment threads. With Anime stuff results will vary.
If your alt, try to improve your behavior and status rather than doing the same stuff that gets you banned in the first place.
If you going to share an image or screen shot post it to a photo website like imgur and photobucket, no attachments.
Mob rule is always in effect. You can be right all you want, but the masses will say otherwise.
If you are going to fight, use well thought out posts instead of brief insults. It's probably a good idea not to get into a long debate in the first place unless your dedicated to some cause or possessed.
Also no ambiguous thread titles, be up front what you want to talk about