Experimental Evidence of Massive-Scale Emotional Contagion through Social Networks (article from the Proceedings of the National Academy of Sciences)

Interesting.  A very scholarly article HERE discussing how social media networks influence on a mass scale the emotions of its users, often in a manipulative and negative manner.  On social media and "social engineering," see a very good write-up HERE.

For more balanced perspective, "10 Great Articles About Social Media," repeat of an older link HERE.

If I can find some time I'd like to collect/post my thoughts/posts on social media that I've authored here at After Nature over the years.  Maybe soon, but again, just need to find free time.