Trolls intentionally make spelling and grammer mistakes and wait for someone to insult their writing to lock them into an argument. Trolls:
Trollers themselves see trolling as a culture, a way of thinking - part act, part science. It's a problem that has existed since the birth of the Internet.
Flamers insult and create tension for fun. Posts are usually well written, clever, biting and subtle. Commandment 12 of Flaming:
Flamers want to push boundaries and have their efforts read and appraised.
John Suler, 2001 - The Disinhibition Effect
Communicating online removes visual cues (i.e. facial expressions), and makes conversations abstract and anchorless.
Side note: Personality traits are accentuated online - people are less constraint by real life social norms and societal expectations.
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