Online Rule #1: Online fights . . . don't!

Online rule: Don't get into a fight with anyone online.

This one is adapted from a recent Twitter experience in which I got into a twit fight with a twit... This paraphrases a Confucius saying: Don't get into an argument with an idiot because people passing by might not be able to tell the difference.

I think that's very true in the online world.

Do you have any favorite rules regarding online behavior?