Adult Content such as lemons, limes, fluff, sexual content itself is all fine.
Yaoi (boy/boy love) and Yuri (girl/girl love) are also fine with some exceptions. You do need to tell me who the couple is. I prefer Sasuke/Naruto (Anime: Naruto) yaoi fics more then anything else. Yuri, I'm not so much a fan of, but in some cases I don't mind it. In all honesty, it does depend.
Cursing/Cussing is also fine and if for some reason it is not I will inform you of such.
Incest, this is a maybe. I'd honestly have to consider it. Sasuke/Itachi (Anime: Naruto) it would be a maybe. Yoh/Hao or Yoh/Zeke (Anime: Shaman King) is a definite no. Those are just a few examples. I guess you could say I have mixed feelings about it.
If you have any questions though please feel free to contact me to ask questions.