Sorry, just wanted to point out that this is no longer an option. The MPAA threw a fit last year, and threw suits at a few fanfic sites. So a lot of sites went through and had to redo their ratings systems. It sucks, but there it is.
Oh, wow, I didn't know this. Okay, so my idea is not an option, then. But I suppose one could come up with one's own rating system if one wanted to.
Oh, and MPAA?
to you.