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Amazon doesn’t like when customers use Google to search for a product, then click on the Amazon link and buy it. Amazon doesn’t get the search and behavioral data from that. By forcing the customer to go to a special site, the customer has to now search and browse directly on Amazon for their items.

Answer: more user data

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That explanation doesn't add up because you can add "smile." in front of any Amazon url and still get the donation.

Amazon should fix their search engine, but Jeff Bezos has been tone-deaf to the issue for years. I think it was 6 or so years back when I was at an all-hands that Bezos was confronted by an employee about the poor quality of search on amazon.com and Bezos shrugged the matter off, said that Top Minds™ had created it and that he thought they did a great job.

Both Facebook and Amazon have terrible search engines.

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