The pain of her parents and her three younger sisters continues, deepened by a malicious, masked mob on the Internet.

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Tuangou, or team buying, aims to drive unprecedented bargains by combining the reach of the internet with the power of the mob.

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Indeed, in Mr Gordon's book, the Internet is the best system yet devised for propagating mob psychology.

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Spurred by the angry mob, Johnson typed the word fraud into his Internet search engine.

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He said the internet provided a "global megaphone for gossip" and contained an element of "mob rule".

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