Using a tool that Facebook offers its users, our columnist found out more than he wanted to know about the social network, the ad industry and himself.

Using a tool that Facebook offers its users, our columnist found out more than he wanted to know about the social network, the ad industry and himself. https://ift.tt/2HuCzdI The New York Times Using a tool that Facebook offers its users, our columnist found out more than he wanted to know about the social network, the ad industry and himself. https://ift.tt/2IKWLXV Using a tool that Facebook offers its users, our columnist found out more than he wanted to know about the social network, the ad industry and himself.
By BRIAN X. CHEN from NYT Technology https://ift.tt/2IKWLXV
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