Earlier quoted context omitted.
> Fair, although you could opt out of the phone book. (And I don't think they had location/address, though it's been so long now that I can't remember for sure.) you can opt out of Facebook too... and Irish phone books had addresses...
you can opt out of Facebook too This is not true. Facebook builds profiles about millions of people who have never had a Facebook account. For example, people who happened to be in the background of a photograph taken by a stranger. Another example: people who installed an app on their phone without knowing that it included a Facebook SDK that was tracking them. This is nothing new. It's been discussed in public, and…
https://www.theverge.com/2018/4/11/17225482/facebook-shadow-...