Everyone: This should be self explanatory. A story that is suitable for even my mother to read. Contains no relationships and/or violence or psychological drama (aka Mind Fuckery).
Mild: This is a step up from General. Relationships may or may not be seen; however, the tone of the fic tends to be heavier -- not necessarily darker. May contain some psychological drama.
Non-explicit Sex and/or Violence: Off screen sex or violence. Can contain extreme psychological drama.
Explicit Sex and/or Violence: Again, this should be self explanatory. Contains extreme sex, violence, or both. Also can contain extreme psychological drama.