Be polite. Don't be rude to others — it's as simple as that. Personal attacks on other users will not be tolerated.
Don't spam. Spamming is sending the same message over and over again, sending gibberish messages repeatedly, or anything else that "floods" the chat with messages that have either already been seen or don't hold any relevance.
Watch your language. Language should generally be kept family-friendly; it is up to the discretion of the chat moderators to decide when someone has gone overboard with cursing. Keep in mind that some people aren't comfortable around harsh language.
Don't disrupt the chatroom. Don't use caps in every single message — it draws attention away from other people and onto yourself, and is considered rude. Additionally, try to stay away from topics you think will cause fights or arguments.
Listen to the mods. Moderators are trusted to "keep the peace" — if they ask you to stop doing something or move away from a topic, please do so. If you have a problem with the actions of a moderator, you can always private message them and explain to them why you think they are being unfair.
Explicit content is not allowed. This includes sexually explicit content, gory/violent content, and content including harsh language. These topics should not be discussed in the chat.
Do not link any content that is explicit or goes against the chat policy. Linked content that is explicit can get you kicked or banned!
Feel free to ask questions. While chat is often used for general discussion, you can always visit the chat to ask the site's regulars questions on editing.