" The total amount of time spent posting comments online correlated positively with sadism, psychopathy, and Machiavellianism. This was especially true for those who relished “trolling,” the anonymous posting of negative and destructive comments. The participants who listed trolling as their favorite activity earned the highest scores on those unsavory psychological measures. "

― Arthur C. Brooks , Love Your Enemies: How Decent People Can Save America from the Culture of Contempt