As of 26 February 2008, the WCAG Samurai errata for Web Content Accessibility Guidelines 1.0 are available. The WCAG Samurai was a group of developers, led by Joe Clark, that publishes corrections for, and extensions to, the Web …

The best web sites take into account the visitor’s perspective first. For your web site visitor, the three most important factors are:

Content & functionality
Navigation & usability
Design

I want to point out, these were determined by a thorough scientific study consisting of …