destina has a poll on what constitutes proper LJ etiquette. She's got some 30 results so far, but it would be interesting to see more answers. I must admit, I'm a bit tempted to know how responses vary by fandom, but this will establish a lovely baseline for future polls. So go, answer, look at results, read the very interesting comments
http://www.livejournal.com/poll/?id=509722