Generally speaking, the privacy statement should indicate if the cookie is being used as part of an advertising network. Cookies may also be used to limit the number times a user sees a particular ad on a website and to measure the effectiveness of a particular campaign.</p> <p>Examples include:</p> <p> • Cookies placed by advertising networks to collect browsing habits in order to target relevant adverts to the user. The site the user is visiting need not actually be serving adverts, but often this will also be the case.</p> <p>