Tolerate and Hold everypony With Friendship. While we don't quite mean this in the literal sense, we do ask that you remain respectful of other people's opinions and realize that they are, at the end of the day, just opinions rather than grounds for declaring thermonuclear war. Don't flame, don't troll, and you'll be fine.
NSFW and rule 34-type content is strictly taboo. Got a fetish involving ponies? We don't care if you do; however, we politely ask that you keep all fetishistic, pornographic, and other "not safe for work" material off of here, whether it is art, fan fiction, or otherwise. There are better places out there to get your clopping fix.
Advertising your own site is not permitted outside of your signature and the website field in your profile. Trying to make money off of our members in any way isn't cool, either, whether it involves spreading your Amazon affiliate link around or referring people to some shady rewards program. If you ask an administrator nicely, however, we might make an exception to this rule
Don't be a backseat mod. If you're not a moderator, don't act like one. If you see trouble, take ten seconds to report it and just move on with your life. The moderation will deal with it - that's their job, not yours.
Don't create multiple accounts. There is no reason to, and users found to possess multiple accounts may have one or more of them merged, banned, or deleted, depending on the circumstances. If someone else creates an account from your physical location (ie.: a family member), please make an effort to let an administrator know.