When the trolls come out to play on the net

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“I hope you drink rat poison and die,” says Prof Steven Knowlton. We are having a conversation about the often negative and often abusive comments below the line of online news stories.

Knowlton, a professor of journalism at Dublin City University, is simply giving me an example of the kind of thing most readers stumble upon on a daily basis. Another day, another dinger for your garden variety internet troll.