Good article. What I see being described is basic marketing. The trolls have learned the lesson of "attraction." Social media is certainly the "Wild West" in many respects, lots of opportunity, but an equal amount of danger.

I would have liked to been able to read the material that they link as their research, but one needs to subscribe to that site to read beyond the abstract.

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Abstract

This study analyzed tweets from handles associated with the Russian Internet Research Agency in an effort to better understand the tactics employed by that organization on the social media platform Twitter in their attempt to influence U.S. political discourse and the outcome of the 2016 U.S. Presidential election. We sampled tweets from the month preceding the election and analyzed to understand the qualitative nature of these tweets as well as quantitative differences between how types of IRA Twitter accounts communicated. Seven categories of tweet behavior were identified: attack left, support right, attack right, support left, attack media, attack civil institutions, and camouflage. While camouflage was the most common type of tweet (52.6%), descriptive analyses showed it was followed by attack left (12%) and support right (7%). A variety of quantitative differences were shown between how account types behaved.

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I would need to read more to be convinced that the ultimate goal was to support Trump over Clinton. If you look at the Abstract, you can see the very limited subset studied (month preceding the election of accounts they have associated with IRA), and even within that subset, the "attack left (12%)" and "support right (7%)" numbers aren't substantive, and certainly not conclusive.

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As good marketers, professional trolls manipulate our emotions subtly. In fall 2018, for example, a Russian account we identified called @PoliteMelanie re-crafted an old urban legend, tweeting: “My cousin is studying sociology in university. Last week she and her classmates polled over 1,000 conservative Christians. ‘What would you do if you discovered that your child was a homo sapiens?’ 55% said they would disown them and force them to leave their home.” This tweet, which suggested conservative Christians are not only homophobic but also ignorant, was subtle enough to not feel overtly hateful, but was also aimed directly at multiple cultural stress points, driving a wedge at the point where religiosity and ideology meet. The tweet was also wildly successful, receiving more than 90,000 retweets and nearly 300,000 likes.

Melanie’s audience was made up of educated, urban, left-wing Americans harboring a touch of self-righteousness. She wasn’t selling her audience a candidate or a position — she was selling an emotion. Melanie was selling disgust. The Russians know that, in political warfare, disgust is a more powerful tool than anger. Anger drives people to the polls; disgust drives countries apart.

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This kind of stuff is almost impossible to fight effectively.