Two of the biggest publishers on the web don't use the advertising industry's standardized ad-privacy program, and it's a problem for even the largest digital-media buyers.
Facebook and Amazon both offer targeted display advertising that can sometimes incorporate behavioral data from third parties. However, while nearly every other relevant media firm, ad network and ad-data firm either uses the industry's self-regulatory Ad Choices program or operates one that can be easily integrated with it, Facebook and Amazon do not.
Regardless, Publicis-owned Vivaki is still required to keep records of the ad campaigns that run on the two sites. It costs extra time and money, and perhaps most important, creates additional privacy concerns.