Ask HN: How does Facebook know what I buy on Amazon or vice versa?

Re:Ask HN: How does Facebook know what I buy on Amazon or vi... by calebcuster on Monday August 28, 2017 @05:01PM (#15120033)

If you want to know what advertisers are retargeting you, you might want to check: http://whoisretargeting.me It can be enlightening. You can also opt out of a lot of it here: https://www.facebook.com/help/568137493302217

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Re:Ask HN: How does Facebook know what I buy on Amazon or vi... by jszymborski on Monday August 28, 2017 @05:46PM (#15120339)

I don't seem to see too much specific to me, other than anything you can gleam from geolocation... Suspect NoScript/uBo/Self-destructing Cookies have mitigated a lot of it.

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Re:Ask HN: How does Facebook know what I buy on Amazon or vi... by hossbeast on Monday August 28, 2017 @08:38PM (#15121311)

Does not work under Brave - which means I'm protected from retargeting, too?

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Re:Ask HN: How does Facebook know what I buy on Amazon or vi... by b4ux1t3 on Tuesday August 29, 2017 @08:25AM (#15123792)

http://i.imgur.com/54JjaA3.png

Well, I guess ad companies have no idea how much money I make.

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Re:Ask HN: How does Facebook know what I buy on Amazon or vi... by junkculture on Monday August 28, 2017 @08:53PM (#15121379)

Interesting. I whitelisted this site, and 2 of the 4 ads it displays on each refresh are from Facebook.

I've never had an FB account and they seem to know it.

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