Nice work and I enjoyed the post. I discovered this blog through Ajaxian and have just subscribed to it’s RSS feed 🙂

One thought of potential concern, I know that some CSS orders properties within a selector in a certain order so that IE will do the correct behaviors. I believe in some cases property order DOES matter.
I haven’t researched this further, but I seem to recall this being the case.

I personally will probably continue to use the YUI CSS compressor as it’s already part of my build process, right alongside using it’s JS compressor.

I look forward to reading future blog posts from you 🙂