If you are a blogger or a website publisher, or a website owner than it becomes very necessary to know the visitors behaviour to increase your ad clicks. You should know how the users of your site or the visitors use to read your site, how their eyes moves on your website or on your blog. It will help you to show your ads(ad agencies like Adsense or any other) to the visitors and increase your earning by ad clicks.
In a few seconds, visitors eyes move at amazing speeds across your website’s words in a pattern that's very different from what you learned in school. Here is a study done and published by useit.com. You can use this study to know your visitors behaviours, thus you can place your ads where most people use to view, and thus you can increase your earning through your website or blog.
In their new eye tracking study, they recorded how 232 users looked at thousands of Web pages. They found that users' main reading behaviour was fairly consistent across many different sites and tasks.
* Users first read in a horizontal movement, usually across the upper part of the content area. This initial element forms the F's top bar.
* Next, users move down the page a bit and then read across in a second horizontal movement that typically covers a shorter area than the previous movement. This additional element forms the F's lower bar.
* Finally, users scan the content's left side in a vertical movement. Sometimes this is a fairly slow and systematic scan that appears as a solid stripe on an eyetracking heatmap. Other times users move faster, creating a spottier heatmap.
Obviously, users' scan patterns are not always comprised of exactly three parts. Sometimes users will read across a third part of the content, making the pattern look more like an E than an F. Other times they'll only read across once, making the pattern look like an inverted L (with the crossbar at the top). Generally, however, reading patterns roughly resemble an F, though the distance between the top and lower bar varies.
In this heat map you can mark red (hot) areas as a most viewed areas, where users or visitors views most of the time on your site or blog so placing ads in this zone can only increase your earning through advertisements on your site or blog. For more information on this you please read Reading Patterns On Websites and also go through Eye Tracking Research to know more and go into more deep, and start earning more from your visitors.