Facebook - What went wrong and why does it matter

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It makes you realise how quickly society has changed, when Facebook and its family of apps - including Whatsapp and Instagram - were shut off for six hours, taking out a vital communications platform used by billions. The impact was far-reaching and severe - underlining how dependent the world has become on a company that is under intense scrutiny. Rory Cellan-Jones - the BBC's Technology Correspondent for fifteen years - has reported on the rise and rise of this global giant. And it's been quite a journey. Kate Bevan, Editor or Which? Computing, joins Rory for 5 Minutes On ... Facebook - what went wrong and why it matters. Image Credit: Getty Images