Source: http://www.oreillynet.com/pub/wlg/9240
Ergonaute - March 3rd, 2006
Eye tracking systems have been used for years to detect where a user looks on the screen. This has been used in the Stanford Poynter Project.
Matching this information with where users actually click is very useful. Read how Ajax has been used in Plotting the exact X/Y coordinates of clicks on a page. Very interesting results.