Book excerpt: This book argues that online harassment communities function as Alternate Reality Games (ARGs) where the collective goal is to ruin peoples’ lives. Framing these communities like ARGs highlights ways to limit their impact in the future, partly through offering people better ways to control their own safety online. The comparison also underlines the complicity of social networks in online harassment, since the communities use their designs as tools. Social networks know this, and need to work on minimizing the problem, or acknowledge that they are profiting through promoting abuse.