Information doesn't become data until it's recorded through the use of a website. If privacy is an urgent concern for you, then why use Facebook in the first place? It's basically a public forum where you share things, creating data.

It's ridiculous (at least in this day and age) to think that Facebook would provide such an extensive service for free. You're going to pay for it with your data.

I'm not a Facebook user.

Whose user agreement governs the use of my data on Facebook?

Dittos for Google or other data aggregators who acquire data from elsewhere. And/or ignore the explicit stated preferences of users. And/or change the rules governing data use post-facto.

Not those whose data are shadow-profile generated, or is provided by others.