I saw that somebody asked this question about 10 years ago, but in 2023 I’m noticing that the recommendations and search results I get on my phone tend to be very different than what I see on my computer.
In: 20
The purpose of the recommendations is to make you stay on the application as long as possible by serving you content that will make you want to click it. When you are on your phone, you are watching different content compared to your smart tv. You probably do not care for work-out videos on your computer, movies on your phone, or youtube shorts on your smart TV.
On the topic on how this is done, the websites have live access to your browser data such as type, version etc. They also have cookies, which track and save previously watched videos on your device. They also often have your account info, which can save details about your history across different devices. Together, this data can cobble together a tailored experience for you to stay on the app as long as possible and generate the most ad-revenue for the company.
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