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A comment on Facebook will reveal who uploaded your contact info for ad targeting. Parent comment

Re:Facebook will reveal who uploaded your contact info for a... by jstanley on Thursday February 07, 2019 @07:45AM (#19104858)
But he has never given that email address to anyone other than Facebook.
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Re:Facebook will reveal who uploaded your contact info for a... by stedaniels on Thursday February 07, 2019 @08:19AM (#19104995)
I think their trying to say.. But Facebook knows the other email addresses you use, due to using Facebook Pixel. The advertiser targets the other email addresses, not the one you use for Facebook.
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