A social network / forum / public discussion term.
Most people like to exchange views and comments with like-minded people using the many different public forums that are available. Many discussions take the form of a 'thread' where one person posts, then another add to it and so on.
However, there are some people that nastily enjoy causing anger and discord within a thread. They deliberately post provocative statements to cause as much mayhem as they can.
Such a person is called a 'troll'.
Challenge see if you can find out one extra fact on this topic that we haven't already told you
Click on this link: Internet troll