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Distributing fake news is a business; there's money to be made from getting people to click on invented stories online. But while fake news may be new to the political game, it's old hat in financial markets where rumours are sometimes spread to make a quick profit. We speak to Dr Bernie Hogan, an internet sociologist from the Oxford Internet Institute, about defining what fake news is and Chris Scott, partner at the law firm Schillings in London, tells us what the regulation of financial markets can teach us about clamping down on fake news. Plus, the former advertising expert turned comedian Radika Vaz in Mumbai, on why it's so very difficult to wean yourself off social media.

(Photo credit: KIRILL KUDRYAVTSEV/AFP/Getty Images)