PersistentHTML Marketing cookies are used to track visitors across websites. The intention is to display ads that are relevant and engaging for the individual user and thereby more valuable for publishers and third party advertisers. NameProviderPurposeExpiryTyperp.gifRedditNecessary for the implementation of the Reddit.com's share-button function.SessionPixelATNFacebookTargets ads based on behavioural profiling and geographical location.2 yearsHTTPhttps://cx.atdmt.com/FacebookSets a unique ID for the visitor, that allows third party advertisers to target the visitor with relevant advertisement. This pairing service is provided by third party advertisement hubs, which facilitates real-time bidding for advertisers.SessionPixelIDEGoogleUsed 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 dayHTTPfrFacebookUsed by Facebook to deliver a series of advertisement products such as real time bidding from third party advertisers.3 monthsHTTPtrFacebookUsed by Facebook to deliver a series of advertisement products such as real time bidding from third party advertisers.