You get an Analytics account when you register for AdWords. Currently Google allows you to track up to 10 sites per account. It is very easy to track AdSense clicks using it... You set up a goal as "/asclick". You then insert the following code onto each page right before the closing body tag: <script src="http://www.example.com/astrack.js" type="text/javascript"></script> That allows you to see what pages were clicked on, and tonnes of related data to cross-reference with.