Crazy Egg

Crazy Egg offers more than a simple heatmap.
Features
Create tests to figure out what people are doing on your website.
Heatmap - A picture of where people clicked on your site. This tells you what’s hot and what’s not, so you can make change that matter.
Dig a little deeper and find out where people click based upon the things like: Top 15 Referrers, Search Terms, Operating System, Browser, etc…
Overlay - Learn more about each element on your page.
List - Take a look at the hard data. You can also export the information and play with it using your favorite spreadsheet application.
Blocking - Block your own clicks
Automatically archived reports - Test results are saved automatically so you can look at them later. We store an exact copy of your page so you can make design or content changes and compare how those changes affect the results.
RSS and Email notifications
Paid Features
Live Reporting - With Crazy Egg your reports are always current; no waiting 24 hours to find out what’s been happening on your site. * Free accounts have a 3-6 hour reporting delay. All paid accounts show what’s happened right up to time of report viewing
Share Results - Share data with people who matter to you. Clients, bosses, imaginary friends, and people you are trying to sell ad space to. Pick your own sub-domain on viewheatmap.com or reportsection.com, customize it with you company logo, and give your peeps their own login to view your test results.