How low can I go?

While I occasionally use one or more of George Carlin’s seven dirty words, I try not to make a habit of cursing (which my dictionary defines as the use of “profanely insolent and reproachful language”). I exercise almost zero control over what commenters say, though, and four letter words could easily slip through unnoticed.
So, I guess it’s not surprising that the blog received a low rating at this site:

Created by OnePlusYou
What did surprise me was to see that Dr. Helen — at whose blog I found the test — was rated High at 17.4%, for I’m a regular reader there and I generally think of her blog as considerably “cleaner” than this one. (It may also be that the software does not distinguish between what is said by a blogger and the material quoted.)
I don’t really keep track of whatever cursing occurs here, and I seriously doubt that any of the readers care. I’ve been scolded many times, but not for profanity.
What, I should try harder?