No spamming, no flaming other users, no flame baiting, just copy some other servers rules lol
Edit: Here's some from my old server's forums lol
1.) No heavy flame, massive amounts of vulgar language, or insulting.
Remember, all human beings are created equal. People may not like some using any vulgar language. Mild flame is allowed, but just dont go overload. Anyone failing to follow this rule will recieve a mute suiting the words you said....
2.) Abusing bugs, glitches, ect... is strictly prohibited!
Please report all bugs/glitches to Mystic Flow. Anyone caught abusing bugs, send a moderator or administrator proof. We will take action to it. People who abuse bugs will recieve a ban depending on what it was used for.
3.) Please don't sexual harass people (goes along with rule 1).
As I said in rule 1, all humas are created equally. If someone decides to post a picture of them self, they can do that. BUT IF YOU ARE CAUGHT CALLING PEOPLE FAT, UGLY, OR SOMETHING LIKE THAT, YOU WILL RECIEVE A BAN FOR A GOOD WHILE! And another thing, guys, if a girl posts a picture of themself, don't ask for personal details or "naked pics".
4.) DO NOT IMPERSONATE FINAL CREED OR JAGEX LTD STAFF!
If you ever say you are part of Jaex Ltd. or Final Creed Staff, you will automaitcally be banned. Final Creed Staff members are identified by colors of their name on forums, or by the silver, or gold crown on the server.