One example of many: manipulating people’s feed as a non-consensual experiment on affecting mood. https://www.forbes.com/sites/gregorymcneal/2014/06/30/controv

One example of many: manipulating people’s feed as a non-consensual experiment on affecting mood. https://www.forbes.com/sites/gregorymcneal/2014/06/30/controversy-over-facebook-emotional-manipulation-study-grows-as-timeline-becomes-more-clear/#6e0a46809caa https://www.forbes.com/sites/gregorymcneal/2014/06/30/contro...