CrazyEgg.com
mck (0 pencils) | Sun, 2006-08-27 08:59Recently launched — helps you track your visitors.
* Test different versions of a page to see which works better
* Discover which ad placement gives the best results
* Find out which design encourages visitors to click deeper
* Learn which content leads to improved sales

Wow! This is pretty cool. Will post the results...
This seems to be amazing!