The interesting software at WordItOut allows you to take a text or a webpage and create a word cloud showing the frequency of use of certain words in that text. (Though it is not clear to me how much text from a website is used.)
The word cloud below shows the focus of attention for this blog, just as an example, selecting words of 6 letters or more. Just for fun I made word clouds for a few other climate-related blogs (but not posted here) -- some interesting results!
Focus of Attention of http://rogerpielkejr.blogspot.com