On a related note, I see exactly what advertisers someone else has interacted with: As you do, I use an alias email for my facebook account. I use it for my fac

On a related note, I see exactly what advertisers someone else has interacted with: As you do, I use an alias email for my facebook account. I use it for my facebook login and nothing else (although I do receive the email that arrives there). Now it happens that there's some guy on the other side of the world who has a name similar to mine who keeps erroneously putting down _my alias email_ address as his email for a lot of services (maybe he just sometimes uses the wrong major email provider after the @). I know A LOT about that guys life based on the countless emails I get instead of him. (loan offers, negotiations for used car sales, church group meeting protocols, what politicians he donates to...) Turns out, the advertiser info FB has on "me" is actually on him (or >95% at least.)