Why does a normal, polite person turn into a raging monster the moment they put on a headset? Esports psychologist Jessica Wu investigates the phenomenon of toxicity in "Toxic Lobbies." From "swatting" and racial slurs to simple griefing, Wu analyzes the dark side of online anonymity. The book explores the "Online Disinhibition Effect," where the lack of face-to-face consequences unleashes primal aggression. Wu also critiques the design of competitive ranking systems (like ELO hell) that induce high stress and frustration, effectively designing games to make players angry. She interviews reformed trolls and professional moderators who clean up the mess. "Toxic Lobbies" is not just a complaint box; it offers solutions for gamers to protect their mental health (mute buttons are self-care) and for developers to build better community systems that reward sportsmanship. It is a deep dive into the unique social experiment of putting millions of strangers in a virtual arena and giving them weapons.