* Revealed: US spy operation that manipulates social media [1]
* How Covert Agents Infiltrate The Internet To Manipulate, Deceive, And Destroy Reputations [2]
Poul-Henning Kamp, in a hypothetical talk about his work at the NSA, talks about just this. [3] Here's a quote:
> The idea is to steer discussions in these forums to or from particular topics (...) and disrupt consensus building against our purposes
[1]: http://www.theguardian.com/technology/2011/mar/17/us-spy-ope...
[2]: https://firstlook.org/theintercept/2014/02/24/jtrig-manipula...
[3]: http://youtu.be/fwcl17Q0bpk?t=14m36s