First, let me go ahead and say I have not used CrazyEgg myself so I’m not to sharp on all of their features (hint, hint: send me an invite ). My one concern is whether or not CrazyEgg has anything else to offer in addition to the click tracking. If all CrazyEgg does is track where users click on-screen, this makes it a mildly useful tool for the designers out there, as well as a beautiful piece of flipmeat for Google’s Analytics crew or the folks over at Mint. If CrazyEgg has added a solid collection of statistics tracking features within this package I can see this becoming the defacto solution, definitely giving Mint a run for it’s money.
One of the most impressive bits I have seen come from CrazyEgg is that it tracks actual location on screen of each click – not just the element clicked. Using their heatmap you can give a quick glance and determine whether you can afford to shorten that login submission button by 50 pixels or if numerous people are confusing an image on site as a link. This could prove extremely useful in testing different AdSense positions!