10. Use your manners.
If you follow none of the other guidelines, observe this one: respect basic rules of civility. If you're in a setting where you know the people don't like cursing, don't do it. Unless you're in a setting where you know the people don't like it, but you also know the people hate you and are just pretending to like you, and they think you're so stupid that you don’t know that they hate you, like you can't read body language or are completely lacking in social intelligence. In that case, play along nicely and with extreme restraint until it’s time to leave, then casually toss this over your shoulder as you walk out the door:
Philpott's blog post, from April 2012, is featured today, July 2, in my daily online paper, Garbl's Style: Write Choices, available at the Editorial Style tab above and by free email subscription.