This is an interesting concept. We havn’t tried it here, but just found it over at StuntDubl and thought it was very interesting. It actually produces “heatmaps” for your site, showing how popular specific links are on your site.

Google Analytics has offered a similar service for a while with its site overlay, but it doesn’t look anywhere as pretty as Crazy Egg’s heatmap (these do use different pages, so don’t compare the actual results…):

Google Analytic (left) vs Crazy Egg (right):

Read more about it at StuntDubl.