CrazyEgg allows you to track your users clicks on a website. This is especially useful when analysing page layouts and the effectiveness of page elements to call a user to an action.
The way crazyegg works is different from Google Analytics and other tracking software. It gives you visual aids to determine the correct placement of elements on a page.
I use Crazyegg to find out where people click, what elements are used by them and if people find particular menu items and links. On this site, I’ve utilized Crazyegg to determine the placement of the large ad and tabs in the right hand column, to mention some.