How much private info does Facebook track? We reveal Facebook's secret rules for handling your ...

Then there's the stuff you do on Facebook, like liking posts, following pages, sharing photos and so on. But tracker cookies (which most websites use) can follow you around the internet, so Facebook can get an idea of the types of websites you like to visit – to serve you more relevant advertisements.
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Then there's the stuff you do on Facebook, like liking posts, following pages, sharing photos and so on. But tracker cookies (which most websites use) can follow you around the internet, so Facebook can get an idea of the types of websites you like to visit – to serve you more relevant advertisements.