We also use one or more cookies for advertising that we serve across the web. One of the main advertising cookies on non-Google sites is named ‘IDE‘ and is stored in browsers under the domain doubleclick.net. Another is stored in google.com and is called ANID. We use other cookies with names such as DSID, FLC, AID, TAID and exchange_uid. Other Google properties, such as YouTube, may also use these cookies to show you more relevant adverts.
Sometimes advertising cookies may be set on the domain of the site that you're visiting. In the case of advertising we serve across the web, cookies named ‘__gads’ or ‘__gac’ may be set on the domain of the site that you're visiting. Unlike cookies that are set on Google's own domains, these cookies can't be read by Google when you're on a site other than the one on which they were set. They serve purposes such as measuring interactions with the ads on that domain and preventing the same ads from being shown to you too many times.
Google also uses conversion cookies whose main purpose is to help advertisers determine how many times the people who click on their adverts end up purchasing their products. These cookies allow Google and the advertiser to determine that you clicked on the advert and later visited the advertiser site. Conversion cookies are not used by Google for personalised ad targeting and persist for a limited time only. A cookie named ‘Conversion‘ is dedicated to this purpose. It's generally set in the googleadservices.com domain or the google.com domain (you can find a list of domains that we use for advertising cookies at the foot of this page). Some of our other cookies may be used to measure conversion events as well. For example, DoubleClick and Google Analytics cookies may also be used for this purpose.