"Community Pulse, Stamen's latest project with Adobe, visualizes the colors that people are using on Adobe Kuler. Kuler is sort of like digg or flickr—but instead of being about articles or videos, it's about color. People upload, comment on, and rate the color palettes that Adobe's software generates, and can use these palettes in their own projects. The idea is that by sharing your color choices with others, you can design more effectively. It's catching on, and there are a couple hundred thousand palettes on the system as of this writing (April 2009)."

www.stamen.com/clients/adobe_kuler
http://kuler.adobe.com/#pulse