After I watched this NetTUTs video, I\'m very interested in trying out the LESS.js method shown.
Other than the obvious, \"What if the user doesn\'t have javascript
I can't see any reason why it should be used in production. It makes more sense to run this as a build script, then make the output (regular CSS) available on a cached cookie-free domain. Then, it works fine without JavaScript and doesn't require JavaScript processing (which will be slower than the CSS parsers written in tuned native code) on every page load.