If you really want to improve your site’s ranking, it is important to understand the behavior visitors to your site follow. A perfect tool for this is Google Analytics. Simple to use, you create a unique code for the site that you are adding the analytics to. Add the script into the end of your html file, or into a plugin tool if your site is built on WordPress, and you will start seeing information usually within 2 days.
Once you install Google Analytics, it is fairly easy to allow access to others. I do this all the time for my clients, so that I can manage the technical aspects, but they can still see the results. The breadth of the information goes fairly deep and gives many views, geolocation information, an more.
Check it out: http://google.com/analytics