A new product has emerged from the UK – Clickdensity.
Clickdensity adds that extra layer above what you are probably using Google Analytics or log analysis to do – that is, track where and how people use your website. What is different about Click Density is that it tracks where, exactly, users click on each page on your site – by mouse coordinate.
It uses a little bit of Javascript code to log activity to the Clickdensity server and then you can log in and collect reports. It works on a sliding per month pay scale depending on what you want to track and for how long.
Certainly if you are wanting to check out or test your information architecture, navigation and menu structures then it would be worth investigating.