[qntm]

All of this says nothing about e.g. the fact that Facebook is a corporation whose business model revolves around the acquisition of information about its users.

I'm paranoid about information about myself. I left Facebook because I want explicit, direct control over what information about me is made available to whom. Yes, Facebook has privacy controls, but they are Facebook's privacy controls.

[gnosis]

I completely agree. The primary reason I left Facebook was because of concerns about my privacy.

No corporation has a right to know who my friends are and who I associate with (much less exploit that information for advertising, or sell it to anyone who wants to pay for it).

I find it really disturbing that so many people in this world are so ready to give up their privacy and information about themselves for very dubious "services" like Facebook and other social media sites, not to mention things like online tax services, video/book recommendation services, etc..

All of these services that are collecting information about you, your friends, and your preferences are going to be datamined to figure out even more information about you.

For instance, there has been research done to figure out political affiliation and sexual preferences from the movies one watches on Netflix. It's really just a matter of time before information like that gets used to discriminate against people (or worse).