People browse the line of sight trails - a very exciting article.
Want to see this article in detail, please see the following address: http://www.poynterextra.org/eyetrack2004/main.htm
Several pictures in the following:
Human reading line transformation:
The eyes most often fixated first in the upper left of the page, then hovered in that area before going left to right. Only after perusing the top portion of the page for some time did their eyes explore further down the page.
Value of web pages:
Dominant Headlines Most Often Draw The Eye First Upon Entering The Upper Left, And Most Offen (But Not ALWAYS) WHENIN.
Note: This is just, people go to see a page for the first time, if a person often goes to a web page, he will form his own view, change the sight trajectory of this page. At that time, the picture above may be a bit unique.
