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A comment on Ask HN: Can we find out why a specific ad appears in our Facebook feed?. Parent comment

Re:Ask HN: Can we find out why a specific ad appears in our ... by sharemywin on Wednesday February 08, 2017 @09:36AM (#13598466)
if any of your friends liked the wine or visited a site and the vendor had a look-a-like audience selected.

or maybe it uses voice recognition to target users "interests"

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