Wordle is a toy for generating “word clouds” from text that you provide. 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. You can print them out, or save them to the Wordle gallery to share with your friends.
Here's a link to my del.icio.us wordle.
Since the word clouds created by Wordle are Java applets you don't have any embed codes to allow you to post your Wordle creations. Instead you can take a screenshot or do as I did and print to a pdf. Then I used the snapshot tool to copy the Wordle image, pasted into Paint, and saved as a jpeg. Below are a couple other examples of my del.icio.us Wordle.
Thanks to John Pederson for his twitter post, OMG! My Wordle. http://skitch.com/t/rp8 and to Vicki Davis' Cool Cat Teacher Blog: A little Taxonomy with your Folksonomy and finally to Jonathan Feinberg the creator of Wordle.