Evidence of massive-scale emotional contagion through social networks (2014) [pdf]
Blaming this on social networks is overdue, in my point of view. What about TV, books, music, arts, ideologies, religions? Yes, they play a part as massive as the social networks and were used (and studied) as a media for contagion.<p>Then, it remains the question that what's different from an emotion that helps or harms people. Social networks acts in this way as a decentralised marketing tool, and totally vulnerable to non-organic manipulation.