As the niche, decentralized social networking platform rises in popularity, it faces rising costs, culture shifts—and potential legal risks. Rodti MacLeary started a Mastodon instance, mas.to, in 2019. By early November 2022, it had amassed around 35,000 users. But since Elon Musk bought Twitter and unleashed one chaotic decision after another, people have signed up for mas.to and other instances,