"In the context of the Internet, a troll refers to a person who makes inflammatory or hostile comments, which by effect or design cause disruptions in discourse... The contemporary use of the term first appeared on Usenet groups in the early 1990s. It is widely thought to be a diminutive of the phrase "trolling for suckers," itself derived from the sports-fishing technique of trolling."
http://en.wikipedia.org/wiki/Internet_troll
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http://en.wikipedia.org/wiki/Internet_troll
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