All the Web Alchemist

This is really cool or maybe it's really scary. All the Web has a new feature called the Alchemist that will let you write your own CSS to layout their pages as long as their accessible from your browser. You just enter a URL for your CSS in a form and All the Web sets a cookie to remember where to access the CSS. You can also point to style sheets others have written and published on their site. There's even a contest for the best CSS -- you win Amazon gift certificates.

I can see All the Web doing this. They're not the most popular choice for a search engine, but they offer one of the nicest experiences in my opinion. Wonder if the idea will catch on anywhere else. I know the IA Wiki does this.