Ok, so if I visit a travel site with a Like button, then Facebook knows someone visited that site.
Later if I visit a sports site with a Like button, then Facebook knows someone visited that site too.
But since I don’t let Facebook store cookies on my browser, Facebook still can’t link the first visit to the second one. Or link those visits to any future sites I visit. So how it can serve personalized ads on them?
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You know how most websites have a Facebook like button?
Ok, so if I visit a travel site with a Like button, then Facebook knows someone visited that site.
Later if I visit a sports site with a Like button, then Facebook knows someone visited that site too.
But since I don’t let Facebook store cookies on my browser, Facebook still can’t link the first visit to the second one. Or link those visits to any future sites I visit. So how it can serve personalized ads on them?
It can link first by IP address, and then by fingerprinting.
Best to use unlock origin etc. to block all those little buttons. Don’t even connect to their server