Perhaps you have run into "word clouds," a visual device that represents how frequently different words appear in a text. As a historian I love it, as I can do fun things like compare Obama's 2008 Democratic National Convention nomination acceptance speech with McCain's from the Republican National Convention.
That's useful stuff. I can show word clouds like those to my students, and ask them what the clouds do (and do not) reveal.
But who cares about utility. Let's use some word clouds to navel-gaze, and check out our favorite baseball-related websites.