A neat little web application

I found this little application on 2 occasions. One time reading an interesting blog here - Liberality, and another time just this morning over at The Good Life. I enjoy reading both blogs. What I came across was the "I Write Like" writing analyzer.

I kinda wanted to do a little experiment with my writing. Even though it says quite suggestively that "Check which famous writer you write like with this statistical analysis tool, which analyzes your word choice and writing style and compares them with those of the famous writers." Neither you or I can determine exactly how this little application garner's it's information (maybe you can, but I'm not all that technology adept), how was it coded to figure out our individual writing styles?