Amazon has introduced recommended articles in its search result pages. It's eating up the good ol affiliate cookie by overwriting it with the recommended article's author's affiliate tag. Research about them and find if there are any in your niche. They might eat up your revenue. Many of the Amazon affiliates are complaining about them in the official forum. Here's an example of Recommended Article: https://www.amazon.com/ospublishing/story/76fc4bc9-cbdd-4912-9fb0-f64ac7b91490/ The above article is ranking #1 after sponsored ads for the query "best watches for men" in amazon's search result page. If your end goal is to drop your affiliate cookie on the visitor's browser and hope they buy something in 24hrs then better change your strategy.