i have friends who work for retargeting ad-tech companies. That's those firms that bid for and deliver ads for things you just maybe bought. The deal is those

i have friends who work for retargeting ad-tech companies. That's those firms that bid for and deliver ads for things you just maybe bought. The deal is those ads show up when the ad space is the cheapest. It's known as remant inventory. So the retargeters can pick it up for very cheap. The deal is the companies KNOW that some people see ads for things they already bought. But some people are seeing ads for things like only considered, and bombarding them with ads does affect behavior. The question is, is the increase in revenue worth the cost of retargeting. The answer is very much yes. Even as it annoys people who already bought it, which doesn't even factor since they already made the revenue from your purchase.