Fanfic Ratings
These are the ratings I use for my fanfics:
C for CHILD – suitable for all ages (formerly G)
YT for YTEEN (ie. younger teens) – some content may not be suitable for children (formerly PG)
T for TEEN – suitable for teens and above (formerly PG-13)
M for MATURE – suitable for mature readers (formerly R)
A for ADULT – Adults Only (formerly NC-17)