Kuler: A Community-based Color Theme Service
Congratulations to the Adobe Kuler team who recently released a community-based color themes service on Adobe Labs.
Kuler is basically still an experiment at this point and not a full-fledged service (hence its availability on Adobe Labs), but the basic idea is that you can search, rate and post color themes on a community-based service. Once you find a theme that you like, it's then possible to download an Adobe Swatch Exchange file with those colors that can then be imported directly into Illustrator, InDesign or Photoshop.
That being said, you could also easily apply this theme to a website by extracting the hexadecimal color values and including them in your CSS rules. It's very easy to explore the most popular, highest rated and newest themes.
In other words, its essentially a productivity service/tool that particularly benefits people that may not be naturally talented in color design. I created a theme called "sea house" that has shades of blue. If you're a designer, you might find this fairly immediately useful.

