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Twitter's boss is stepping down. Dick Costolo is making way for Jack Dorsey, one of the founders of the social messaging platform, who will take the role for the interim. Tech company Oculus Rift announces the latest in virtual reality headsets. Fifa's spokesman resigns after making a joke about the company in public. And we ask - can you patent a shape? As the makers of one well known chocolate snack try to put a trademark on its four fingered outline.