[alx]

GCHQ, NSA ‘infiltrate’ social media to spread disinformation, with slide concerning psychology aspect of social network, including facebook :

http://inserbia.info/today/2014/04/gchq-nsa-infiltrate-socia...

The Intercept article concerning JTRIG actions on social networks :

https://firstlook.org/theintercept/2014/02/24/jtrig-manipula...

This study would fit pretty well in documenting possible manipulations.