Great article.

Usability Findings:

• Form labels work best above the field
• Users focus on faces
• Quality of design is an indicator of credibility
• Most users  do know how to scroll
• Blue is the best color for links
• The ideal search box is 27 characters wide
• White space improves comprehension
• Effective user testing doesn't have to be extensive
• Informative product pages stand out
• Most users are blind to advertising