How are cookies used for advertising purposes?
Cookies and ad technology such as web beacons, pixels, and anonymous ad network tags help us serve relevant ads to you more effectively. They also help us collect aggregated audit data, research, and performance reporting for advertisers. Pixels enable us to understand and improve the delivery of ads to you, and know when certain ads have been shown to you. Since your web browser may request advertisements and web beacons directly from ad network servers, these networks can view, edit, or set their own cookies, just as if you had requested a web page from their site.