In short, Wordle is a gizmo you can use to generate “word clouds” from text. You provide the feed, text, or URL and the cloud it generates gives priority prominence to words that appear more frequently in the source text. You can tweak your clouds with different fonts, layouts, and color schemes. The images you create with Wordle are yours to use however you like. You can print them out, or save them to the Wordle gallery to share with folks. The old 'PrintScrn + drop into Photoshop' is always an option too, maybe even when using this as a catalyst for art.
Anyway, nice layout options. Could look very cool. Would like to see it deep trawl the full blog but single page will do for now.
Ta to @jennhienrichs for Twittering this one and giving me the heads-up.