“Lulz�? is how trolls keep score. A corruption of “LOL�? or “laugh out loud,�? “lulz�? means the joy of disrupting another’s emotional equilibrium. “Lulz is watching someone lose their mind at their computer 2,000 miles away while you chat with friends and laugh,�? said one ex-troll who, like many people I contacted, refused to disclose his legal identity.