This rating was determined based on the presence of the following words: ass (3x), crappy (2x), and limbs (1x).
In a way, this goofy blog rating script could be more helpful than most of the other stupid things that make the blog rounds. I did my own search for “dirty words” a while back, and cleaned things up a bit. (Meg says that if you wouldn’t want your mom or your employer reading it, you probably shouldn’t post it to your blog.) Unfortunately, I think this rating system falls short for me, as I have several cartoons featuring nudity and other weirdness on here. So I guess it should be at least a PG-13.