Ethan Zuckerman, a longtime technologist and social media scholar, thought he fully understood Section 230, the 1996 statute that contains the famous "26 words that created the internet." But three years ago, he was reading its full text aloud to his class at the University of Massachusetts at Amherst when suddenly, in his words, "a lightbulb went off in my head." It struck him that the law, widely understood to shield tech companies from being sued for their users' posts, also protects users. In particular, it protects people who build tools to filter or moderate online content. People like Zuckerman's friend Louis Barclay, a developer who in 2021 was permanently banned from Facebook and Instagram for developing a tool called "Unfollow Everything" that lets users, well, unfollow everything and restart their feeds fresh. Three years later, that eureka moment has turned into a lawsuit " one that, if successful, could loosen Big Tech's grip on how people use social media. The suit ... asks a California court to declare that Meta can't ban or sue him for building an unfollowing tool inspired by Barclay's. If the suit succeeds, Zuckerman plans to release the tool, called "Unfollow Everything 2.0," and hopes a wave of other tools to give users more control over their online lives will follow. Such tools are sometimes called "middleware" and have been touted by the Stanford political scientist Francis Fukuyama as a way to break Silicon Valley's chokehold on online speech.