Here are some rules that should be followed for good ettiquette.

1- No controlling other's characters, you can make them move a bit but not say something big or do something big. For example, I couldn't make another character argue, or get in a fight.

2- God-modding. Don't do it, you can't make your character all powerful and win in fights all the time, that is unfair and ridiculous, even if they are more powerful than the other people you should be courteous about it. Make their abilities believable, I've seen somebody's character turn a sword into water (thats kind of ridicules). Some people won't give up in fights, but there is a report button, but don't abuse it.

3- Something that annoys me a lot. Don't continue in an RP without anybody, after a few posts, maybe two or three, wait for other people to post before continuing your adventure.

4-Don't advance the plot too far or too quick. Be considerate of others RP plans.