I absolutely love Google Analytics! Sure, it's not anything new on the site metrics front. It's all data you can get from just about any tool. This comes with Google's overwhelming ease of use, tho. That, combined with the fact that it's free - how could you not like it!? Try it out, if you have a site. All you have to do is add a two javascript calls - one importing a Google JS file and the other to set a variable and call a method. That's it. They suggest you place it in the head secton of your HTML, but you can place it anywhere, of course. Placing it in the head just ensures it gets called all the time - the sooner in the HTML it is, the sooner it's called and tracked.