Wordle is a toy for generating 'word clouds' from text that you provide. You can also type in a URL of a website. The clouds give greater 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.
Here's a word cloud of The Generator Blog.
(via Paperback Writer)
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