Cookies are small data files that allow websites to recognise repeat visitors and are used to facilitate visitor navigation and experience of the website. The cookie does this by assigning a unique user number to the visitor. You should be aware that most browsers are initially configured to accept cookies, but you are entitled to refuse to accept cookies. If you wish to do so, then you should adjust your browser settings. You should be aware, however, that cookies can often be necessary to provide you with a certain website feature such as customised delivery of information.
You can find out more about Google’s position on privacy as regards its analytics service at http://www.google.com/intl/en_uk/analytics/privacyoverview.html