Google is amazing.

AdSense, Webmaster Tools, an amazing search engine, and my new favorite Googleicious tool - Google Analytics!

If any webmaster still hasn't started using it yet, do so NOW! It is by far the most intricate, detailed, and easy to use tool for your traffic facts. All you do is paste a simple code at the bottom of your page and then Google does all the rest. I've been using it for about 5 days now and I am extremely impressed. Not only are you shown every possible traffic fact you could ever want (average time on your site, referring sites, visitor bounce rates, etc, etc), but their new "map overlay" feature is one of the coolest gadgets I've ever played with. You can see which country, state/province/territory, and city your visits are coming from in a very clean-looking clickable world map. The amount of information you can learn about from your visitors is borderline creepy! Big brother Google is a webmaster's best friend.

If you're already using AdSense, gmail, or any other Google feature, analytics can simply be added using the same name and password!