This script allows users to monitor every aspect of their visitors hardware configuration, which is very usefull if you want to optimize your web pages for certain browsers or screen resolutions (10% still uses 800x600 on their monitors). It also allows you to set a cookie such that own visits are not included (click the red light bulb). Very nice feature! I enjoy this script more than anything, and recommend it deeply. It is fairly easy to install, just edit a few variables in the config file.