2018 Twittersphere: Human beings – An estimated one-third . . .

'An estimated two-thirds of tweeted links to popular websites are posted by automated accounts – not human beings.'

Automated Accounts and Popular Websites
The role of so-called social media “bots” – automated accounts capable of posting content or interacting with other users with no direct human involvement – has been the subject of much scrutiny and attention in recent years. These accounts can play a valuable part in the social media ecosystem by answering questions about a variety of topics in real time or providing automated updates about news stories or events.

At the same time, they can also be used to attempt to alter perceptions,
such as political discourse on social media, spread misinformation, or manipulate online rating and review systems. As social media has attained an increasingly prominent position in the overall news and information environment, bots have been swept up in the broader debate over Americans’ changing news habits, the tenor of online discourse and the prevalence of “fake news” online.
In the context of these ongoing arguments over the role and nature of bots,
Pew Research Center set out to better understand how many of the links being shared on Twitter – most of which refer to a site outside the platform itself – are being promoted by bots rather than humans.

To do this, the Pew Research Center used a list
of 2,315 of the most popular websites1 and examined the roughly 1.2 million tweets (sent by English language users) that included links to those sites during a roughly six-week period in summer 2017. The results illustrate the pervasive role that automated accounts play in disseminating links to a wide range of prominent websites on Twitter.

Read more about the key findings of this research:

Bots in the Twittersphere

An estimated two-thirds of tweeted links to popular websites are posted by automated accounts - not human beings CORRECTION (April 2018): The following sentence in the report inadvertently switched the percentages for sites shared by conservatives and liberals: "Suspected bots share roughly 41% of links to political sites shared primarily by conservatives and 44% of links to political sites shared primarily by liberals - a difference that is not statistically significant."

Citation: Report by Stefan Wojcik, Solomon Messing, Aaron Smith, Lee Rainie and Paul Hitlin
via Pew Research.