'Utterly horrifying': ex-Facebook insider says covert data harvesting was routine.

Reddit is not much better.. I just sent a email to their legal.

"We will not share, sell, or give away any of our users’ personal information to third parties, unless one of the following circumstances applies:

Except as it relates to advertisers and our ad partners, we may share information with vendors, consultants, and other service providers who need access to such information to carry out work for us; If you participate in contests, sweepstakes, promotions, special offers, or other events or activities in connection with our Services, we may share information with entities that partner with us to provide these offerings; We may share information (and will attempt to provide you with prior notice, to the extent legally permissible) in response to a request for information if we believe disclosure is in accordance with, or required by, any applicable law, regulation, legal process or governmental request, including, but not limited to, meeting national security or law enforcement requirements; We may share information in response to an emergency if we believe it's necessary to prevent imminent and serious bodily harm to a person; We may share information if we believe your actions are inconsistent with our user agreements, rules, or other Reddit policies, or to protect the rights, property, and safety of ourselves and others; We may share information between and among Reddit, and its current and future parents, affiliates, subsidiaries, and other companies under common control and ownership; and We may share information with your consent or at your direction."

/r/worldnews Thread Link - theguardian.com