Some of the content, advertising, and functionality on our Services may be provided by third parties that are not affiliated with us. Such third parties include: Advertising providers, which help us and our advertising customers provide ads that are tailored to users' interests and understand how users respond to those ads; Audience-measurement companies, which help us measure the overall usage of our Services and compare that usage to other online services; and Social networking services (like Facebook, Twitter, LinkedIn, and Google ) that enable you to login to certain of our Services and to share things you find on our Services with your social network. These and other third parties may collect or receive information about your use of our Services, including through the use of cookies, web beacons and other technologies, and this information may be collected over time and combined with information collected on different websites and online services. 