It doesn't seem to work at the moment. The site claims to determine "What level of read is education is required to understand your blog." Since the URL is to the main Mudcat page, not the threads page, it's probably a good level to shoot for. We have kids at school who show up here and people from many countries who may or may not speak English fluently, all walks of life and educational backgrounds.

I have to wonder about those who don't know the difference between a blog and a forum though...