Short version: be kind, keep it public, and do not share personal information. The longer version, because some of it matters more than it might sound.

• No personal information. Not your address, school, phone number, private social accounts, or anybody else's. This applies to old profiles too: you may share your own old username, but please do not identify other people by their real name or repost private things from the old site.
• No harassment. Disagreeing is fine. Following someone around to keep doing it is not.
• No dating, solicitation or sexual content, and no attempts to move anyone into private or off-site contact. This community includes both adults who played as children and children playing now, and that is the reason this rule is written broadly.
• No spam or impersonation.

Reporting is on every post. Use it, including for things you are not sure about. Account-specific problems and anything containing personal details should go to the team privately rather than into a public thread.

Moderation here will be calm and predictable rather than heavy. If something you posted disappears, ask, and you will get an actual answer.