The Juicy Studio readability tests will take the address of a web site and return how readable the text on that page is using the Gunning-Fog, Flesch Reading Ease and Flesch-Kincaid grade level ...

Over at Juicy Studio there is a nice post about readability. It covers the basic concepts of what makes readable writing as well as how to tell how your own writing stacks up. They've even got a nifty ...