Sex, politics and religion. Oh- and I try not to complain about people I know in real life, too. If I feel I must, then I use the following phrase as a measuring stick "I didn't mean to be offensive, I meant it to be funny, I'm sorry" and if I can say that with a straight face, then I go for it.
I am a person who hates confrontation, I stay away from polotics and religion. I come from a very passionate family, whic meant that if I wanted a nice drive or something I didn't let my oppions out. Now my husband is so stubborn and strong minded, we stay away fro these topics too.
Definitely sex details... I don't have that kind of blog... LOL Although I wouldn't have a problem discussing my religious beliefs about sex. I don't usually mention politics, but I'm sure I will later on as my blog grows.