Jon Keegan

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Jon Keegan is an investigative data journalist at The Markup. Before The Markup, he was a Senior Research Fellow at the Tow Center for Digital Journalism at Columbia University, researching signals of trust in online news and studying the role of AI in journalism. He also worked at The Wall Street Journal for 18 years, where he ran the interactive graphics team.

Forget Milk And Eggs: Supermarkets Are Having A Fire Sale On Data About You
When you use supermarket discount cards, you are sharing much more than what is in your cart—and grocery chains like Kroger are reaping huge profits selling this data to brands and advertisers
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