This pairing service is provided by third party advertisement hubs, which facilitates real-time bidding for advertisers. 179 daysHTTPIDEGoogleUsed by Google DoubleClick to register and report the website user's actions after viewing or clicking one of the advertiser's ads with the purpose of measuring the efficacy of an ad and to present targeted ads to the user.1 yearHTTPtest_cookieGoogleUsed to check if the user's browser supports cookies.1 dayHTTPtrFacebookUsed by Facebook to deliver a series of advertisement products such as real time bidding from third party advertisers.