Google Analytics is a free tool that gives Web site owners a relatively easy system to keep track of how people are accessing content on their sites, including tracking which content is getting the most views, how much time each user is spending on the site, and the number of visits by time of day. There's also a handy map overlay which will show you where your users are, right down to the city they live in.
The service is mainly an extension of Google's AdWords program, which lets site owners purchase words that link to various parts of their site via contextual ads that show up on Google or partnered search engine results. But even if you're not interested in making money, the free Analytics solution requires no software, just a line of code on any page you want to keep track of. If you're a WordPress user, there's even a plug-in to automatically add it to your site. Blogger users are also able to add it by tweaking their blog templates.
