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.
Cookie purpose description: Used 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.
Cookie purpose description: Creates a unique, machine-generated user ID. AddThis, which is owned by Clearspring Technologies, uses the user ID to make it possible for the user to share content across social networks and provide detailed statistics to various providers.