This is what dannychoo.com looked like in 2002.
Through each design iteration, I've always been analyzing user behavior so that I can add/remove/change what was necessary to improve the user experience. At Amazon, we had internal tools that enabled us to set up intricate tests to see what users clicked on etc. Now Google offers Google Web Optimizer
. Its a new tool that enables you to try out different designs of your website. Google will show different layouts to different visitors of the same page. Google will also handle the sessions involved. The tool will generate a report to show you which design was the most effective in converting your users. The video below explains more about Web Optimizer.