We use a product called Google Analytics which records when people visit our website, how they found us ( via Google, direct link etc ), and which individual pages they visited. The data is aggregated and anonymised, which means we cannot identify you as an individual. This information is useful to us as we can see how many people visit our site (and we hope it's lots!), how many are "new" visitors, how many are "returning" visitors, and which are the popular pages.
It even tells you how to opt out of Google Analytics, if you wish to do so.
By navigating around our website, we will assume that you are happy that we are using Google Analytics and that cookies are being set.