Scroll down this page and on the left you will see a new thingy that rates the reader level required for your blog. My blog evaluates as...elementary school.
OMG, am I really that simple?
Of course there's no telling how accurate this toy is, so to test it, I tried some other sites to get a comparison.
www.thomasandfriends.com: elementary school
That last is Thomas The Tank Engine's official site.
It's not much of a test, but it's more or less in line with what you'd expect, so maybe I'm a simpleton after all.