Facebook’s ability to discern with creepy accuracy the “people we may know” has surprised, delighted, and horrified its users for years. While the magic sauce behind friend suggestions has always been a bit mysterious, it now includes some potentially unsettling information. Thanks to tracking the location of users’ smartphones, the social network may suggest you friend people you’ve shared a GPS data point with, meaning your friend suggestions could include someone whose face you know, but whose name you didn’t until Facebook offered it up to you.
Last week, I met a man who suspected Facebook had tracked his location to figure out who he was meeting with. He was a dad who had recently attended a gathering for suicidal teens. The next morning, he told me, he opened Facebook to find that one of the anonymous parents at the gathering popped up as a “person you may know.”
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