When you tell people you’ve been tracking them across the internet, they freak out and avoid buying your product, research at the Harvard Business School found.
The 449 paid subjects in the targeting research, who were recruited online, were about 24 percent less likely to be interested in making a purchase or visiting the advertiser if they were in the group that was told they were tracked across websites, researchers said.
— Read on theintercept.com/2018/05/09/facebook-ads-tracking-algorithm/