What “Gentlemen Rules” could be created for a more genteel Fluther?

I am sure some “Gentlemen Rules” can be established and acted upon to make Fluther a place where no one in the future has to ever feel cyber bullied, insulted, or worse. I know there is no way to implement any rule officially; we did not create the site. However, voluntarily we could adhere to a protocol that will keep infighting, insulting, berating, etc. to a bare minimum. It will never be 100% there will always be someone that will take something said personally because it was said against their group, political party, religion, orientation, lifestyle, country, etc. If you were going to name at least one “Gentlemen Rule” (if you don’t have more than one) what would that rule be?