It is not just politicians who have cause to complain about fake news. Starbucks fell victim to fakery this month when tweets advertising "Dreamer Day", in which the coffee chain would supposedly give out free frappuccinos to undocumented migrants in the US, spread at lightning speed online. Advertisements including the company’s logo, signature font and pictures of its drinks were circulated with the hashtag "#borderfreecoffee". But it was dreamt up by a hoaxer. "How about we meme ‘Undocumented Immigrant Day’ at Starbucks into existence?" one user of the messaging board 4Chan asked on August 2. "Could cripple their business a bit." Starbucks raced to deny the event, replying to individuals on Twitter that it was "completely false" and that people had been "completely misinformed". Yet the rapid spread of the fake news showed, again, the power of social platforms to damage reputations, and illustrated how companies have to be more vigilant and creative in responding. Snopes, the fac...

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