Google Analytics - Google Code.
What is Google Analytics?
With Google Analytics, you can gather, view, and analyze data about your website traffic. By embedding our basic JavaScript snippet into your pages, you see which content gets the most visits, average page views and time on site for visits, which ads are driving the most visitors to your site, and more. You can also use the simple administrative interface to set up goals and filters to control what data goes into your reports based on your business needs. The best part: this sophisticated, full-featured web analytics package is free.
