In the two weeks since the US presidential election, the platform has grown from close to 14 million users to nearly 21 million. Bluesky has broad appeal in large part because it looks and feels a lot like X (formerly known as Twitter), which became hugely popular with scientists, who used it to share research findings, collaborate and network. One estimate suggests that at least half a million researchers had Twitter profiles in 2022. That was the year that billionaire Elon Musk bought the platform. He renamed it X and reduced content moderation, among other changes, prompting some researchers to leave. Since then, pornography, spam, bots and abusive content have increased on X, and community protections have decreased, say researchers. Bluesky, by contrast, offers users control over the content they see and the people they engage with, through moderation and protections such as blocking and muting features, say researchers. It is also built on an open network, which gives...
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