Twitter reports that fewer than 5% of accounts are fakes or spammers, commonly referred to as “bots.” Since his offer to buy Twitter was accepted, Elon Musk has repeatedly questioned these estimates, even dismissing Chief Executive Officer Parag Agrawal’s public response.Later, Musk put the deal on hold and demanded more proof.So why are people arguing about the percentage of bot accounts on Twitter?As the creators of Botometer, a widely used bot detection tool, our group at the Indiana University Observatory on Social Media has been studying inauthentic accounts and manipulation on social media for over a decade. We brought the concept of the “social bot” to the foreground and first estimated their prevalence on Twitter in 2017.Based on our knowledge and experience, we believe that estimating the percentage of bots on Twitter has become a very difficult task, and debating the accuracy of the estimate might be missing the point. Here is why.What, exactly, is a bot?To measure the prevalence of problematic accounts on Twitter, a clear definition of the targets is necessary. Common terms such as “fake accounts,” “spam accounts” and “bots” are used interchangeably, but they have different meanings. Fake or false accounts are those that impersonate people.…
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