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
Yes, if people with Javascript disabled is a concern, then I would recommend against the Javascript-based LESS. Personally, I see no advantage in it over the Ruby-based one, since you really only need Ruby installed on your development machine - once you compile the .less file to a .css, there's no difference between a LESS-compiled .css file and "hand-written" one.