Thanks to Derek Miller at Penmachine, in his comments about my post on Chomsky just below, for mentioning Readability.info. It's a site that not only explains various readability systems but allows you to assess the readability of a Web site or uploaded Word file.
Derek has already reported the scores for "Writing for the Web," which are fairly good. It's alarming to see, though, that 23% of my sentences are in the passive.
Honesty compels me to note that Readability.info's page has a howling subject-verb disagreement in the first sentence ("tools...analyzes"), and the Flesch readability scale appears several times as "Flesh." I guess that's just one of the evils that Flesch is heir to.