How Pinterest reached 150 million monthly users (hint: it involves machine learning)

How Pinterest reached 150 million monthly users (hint: it involves machine learning)

On Pinterest.com, I find myself being summoned from various directions, as if I’ve just stepped into a party with my closest friends. Many pins I see are interesting to me — it’s a pleasant feeling. There’s a midcentury modern light brown leather couch. A house with a window lined with dark brown wooden shutters. A shelf made from the back of an iMac. A media console on wheels with iron legs and wooden slats. Cinnamon rolls. Behind each of these recommendations, there’s a reason. Each one is related to something I’ve previously pinned to my Pinterest boards, or something I’ve viewed before, or something I’ve searched for. And, in the case of the cinnamon rolls — it’s because someone I follow pinned it. None of this is a coincidence. Pinterest’s…


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