Interesting links

• The Elements of Typographic Style Applied to the Web - a practical guide to web typography

  A guide (mostly CSS tips) for web typography based on Bringhurst's The Elements of Typographic Style.

• Usability News 101 - Shrestha

  Usability testing using an eye-tracking system to analyze different column layouts.

• 40 Tips for Optimizing Your PHP Code

  An interesting list of facts about the internal PHP engine to keep in mind when writing PHP code.