Trolling

Urban Dictionary: Trolling

Being a prick on the internet because you can. Typically unleashing one or more cynical or sarcastic remarks on an innocent by-stander, because it's the internet and, hey, you can.

Responsible Digital Citizenship Must be Taught in a Global Age of Interconnectiveness, Especially in Regards to Youth Gamer Culture and Social SitesIf you wouldn't say it to someone, then don't share it online.