Amazon has gotten into the advertising business [1] and I believe are growing quickly. I find it a disturbing move on their part; I have to trust that they're n

Amazon has gotten into the advertising business [1] and I believe are growing quickly. I find it a disturbing move on their part; I have to trust that they're not mining my purchase history for ad targeting. If they do do so, it may be susceptible to targeted discovery. (Run ads with unique URLs for each selection keyword; everyone who sees the ad is apparently someone who bought that kind of product.) I hope Amazon is smart about the risks they take. [1] https://www.fool.com/investing/2018/09/23/amazon-is-now-the-third-largest-digital-ad-platfor.aspx https://www.fool.com/investing/2018/09/23/amazon-is-now-the-...