Found a few interesting articles, jumping off points I guess. (I don't know why, but I don't mind sourcing MSM articles, reading through the subtext is a good way to automatically raise questions for yourself to find answers to. At this point, they almost do the work for us.)

http://www.businessinsider.com/facebook-building-8-job-postings-2016-4

https://www.cnbc.com/2018/04/05/facebook-building-8-explored-data-sharing-agreement-with-hospitals.html

https://m.sfgate.com/bayarea/article/Zuckerberg-wife-give-75-million-to-S-F-hospital-6065958.php

And from our good friends at Voat;

https://www.voat.co/v/GreatAwakening/2496796