Wordle creates beautiful word clouds from text that you supply.
Via Bruno Giussani who’s got more examples.
bertrand’s brain grep
cat /dev/brain | egrep -i ‘tech|thoughts|noise’
cat myself | sort | head -2
Bertrand Delacrétaz here - my "résumé" will tell you more.
The opinions expressed here are my own, I'm not representing any group or company on this blog. YMMV.
bertrand's brain grep 
I instantly read “open source development should work”
:)
They should provide these beautiful clouds design as Flash badges for your site. I put my delicious account in their design and it is helpful for you and your visitor.