You are being targeted with a type of ad campaign called Retargeting or Remarketing. It uses cookies to inform ad networks that you have recently a page with a

You are being targeted with a type of ad campaign called Retargeting or Remarketing. It uses cookies to inform ad networks that you have recently a page with a particular retargeting campaign ID. Its popular among advertisers as it shows that you are "in the market" for a particular item, which is much more specific and valuable than a random person. If you would like these particular ads to stop, simply clear your cookies or click on the encircled I icon inside the ads to configure them to not target you. Alternatively you can block all ads. It's worth noting that some retargeting matches on the cookies of anybody sharing the same public IP, ie router/ISP, so others in your household may have to do the same. Also, often there are retargeting pixels set for multiple ad networks, so you may have to opt out multiple times. People often ask why they are targeted after they have made a purchase. This is because of limitations of tracking. Merchants can add trackers that show on their checkout pages to associate ads with sales, and stop targeting browsers that have made purchases. Sometimes this works, but often either A. advertisers don't correctly configure these systems or B. limitations with 3rd party cookies make it so the "I've already bought it" signal never makes it back to the ad network. What I don't understand is why consumers aren't offered a choice by ad companies to actually just tell them they bought it. I would assume a marketer would love to know feedback from buyers like when/where/why the purchase took place as well as commentary on the product, vendor etc. It seems like a missed opportunity to make the advertisee more empowered and advertiser more informed.