Anyway, I eventually set up a placholder Facebook account. Once I typed my name into the setup form, they provided a frighteningly detailed list of friends and acquaintances. Since then, due to "do you know" emails, I get the impression they slurp other people's call and sms logs (or maybe just contacts, if FB types are more OCD about address books than me) into their social network graph.
Anyway, it is not much of an exaggeration to say that facebook gets more metadata to sell every time you make a phone call, regardless of whether you have an account.
(Of course, I don't have their software installed on any of my devices. However, I did give them my phone number for 2FA purposes. How naive I was. Assuming the phone app grabs people's address books and/or call logs, they probably had it before I gave it to them)
Anyway, I eventually set up a placholder Facebook account. Once I typed my name into the setup form, they provided a frighteningly detailed list of friends and acquaintances. Since then, due to "do you know" emails, I get the impression they slurp other people's call and sms logs (or maybe just contacts, if FB types are more OCD about address books than me) into their social network graph.
Anyway, it is not much of an exaggeration to say that facebook gets more metadata to sell every time you make a phone call, regardless of whether you have an account.
(Of course, I don't have their software installed on any of my devices. However, I did give them my phone number for 2FA purposes. How naive I was. Assuming the phone app grabs people's address books and/or call logs, they probably had it before I gave it to them)