Many excellent web design and coding tips are presented in this article summing up eye-tracking studies: Scientific Web Design: 23 Actionable Lessons from Eye-Tracking Studies. It’s good to see that many of this points are directly related to web accessibility guidelines and web standards.
7. Type size influences viewing behavior.
10. Shorter paragraphs perform better than long ones.
15. Bigger images get more attention.
19. Lists hold reader attention longer.