Link Blog
November 2006
IE expressions ignore CSS media types
Roger Johansson evaluates how IE ingores some media types in CSS, particularly where proprietary expressions are concerned.
How to generate conditional comments when using XSLT
Explanation of how to generate Microsoft Internet Explorer's conditional comments when using XSLT to generate your site's pages.
Em Unit Calculator
This thing rocks. This will show your relative EM units based off the base browser default, when you add nested children and so forth. I haven't actually tested to see for accuracy, however, it's looking pretty good.