Someone sent me a link to a service that will evaluate the reading level of your blog. You put in the url and it scans the content and voila! I'm not sure what the different levels are--I saw one site that said "undergraduate." After only a few seconds an icon with a brain came on the screen proclaiming that goodwar.blogspot.com is "Genius."
My parents will be happy to hear this.
You can get your blog evaluated here: http://www.criticsrant.com/bb/reading_level.aspx