When Iran’s supreme leader tweeted criticism of Israel on Sunday, Israel’s Embassy in the United States fired back with an image from the movie “Mean Girls” to poke fun at Ayatollah Ali Khamenei.

As social media and other online networking sites have grown in usage, so too has trolling - an internet practice in which users intentionally seek to draw others into pointless and, at times, uncivil ...

As social media and other online networking sites have grown in usage, so too has trolling – an internet practice in which users intentionally seek to draw others into pointless and, at times, uncivil ...

What do we make of trolling from a psychological point of view? Is it a new, unrestrained form of sadism unleashed by the internet? Is it a form of obsessive-compulsive disorder, externalized via ...