LESS, making CSS dynamic

I have been experimenting with LESS for a while, a javascript that makes it possible to use variables and nested rules in CSS that make the code a lot easier to manage. Or possibly more difficult, for those who are not familiar with the concept. I may possibly release a series of templates that use LESS, along with the Semantic Grid System, but before I do I want to ask if anyone of you who visit this site has any experience of these two tools?

If so, I would love to exchange some ideas and get some feedback on the template concepts before I release them. Post a comment and I’ll send you the files along with some points on which I could use some comments!