David Shea (the CSS Zen Gardener) urges web designers to stop CSS hacking or be stopped. Nice article from the fledgling Vitamin website.
CSS Zen Garden inspired me to try and do a better job of CSS and semantic markup, I’m hoping to find enough time to make Geograph a whole lot better in that area too. One thing David’s article mentions is the difficulty of testing, but I find the BrowserCam service invaluable. Not only can it take screen captures of a page on many different OS/browser combinations, you can also remotely access some systems via VNC to play with your site for real. Easier than maintaining your own virtual machines or real test kit!