A tool to give an indication of how easy text is to read, using the Flesch-Kincaid, Gunning-Fog, Coleman-Liau, SMOG and Automated Readability scoring systems.
This tool has moved! It's now on its own domain, at Readability-Score.com. (It's also had a small makeover and is now full of speedy AJAXy goodness.)
The code that powers the tool is still available on GitHub.