I've cleaned up, formalized and published my application that I used to analyze Bush's speech on Iraq.
Ever needed to analyze a document and visualize the most important terms? Enter a plain text document with at least three paragraphs, and tagverse will generate a tag cloud from extracted key terms.
I will be making the source code available in the near future.
State of the Union analysis
I provided tagverse with the text of Bush's 2007 State of the Union address.
Compare this result to the Iraq speech; note the inclusion of "diplomacy", and the avoidance of "sectarian" and "nuclear weapons". While this analysis is purely algorithmic and arbitrary, you can use it to see trends, especially in this sort of context.