Usability toolkit: Crazy Egg tracks clicks
Do you know where people are clicking on your pages? If you’re using Crazy Egg, then you do.
This very affordable service starts at $9/month with a 30-day free trial.
The heatmap may be the heart of the service, but I find the confetti breakdown (distinguish between clicks by referral source, search term, browser and other variables) more useful. CrazyEgg also offers scroll maps as well as overlay reports that provide specific information about each link on a page.