I have just posted another tool to my projects section. This one is called the Digg Election Story Analyzer and shows the trends in word usage over time and word associations for stories that reached popular status in the Digg US Elections 2008 topic. The tool loads the latest 500 popular stories and analyzes the text found in the story titles and descriptions. An 'attention timeline' and tag clouds of related words are then displayed.
Here are a couple of images to give you a taste. Of course, it's always more fun to just give the Digg Election Story Analyzer a try!