Facebook is going to have 'real trouble' keeping users (expert) As Facebook reels from an uproar over the harvesting of data on 50 million users, a movement to quit the social network has gathered momentum. Karen North, communications and social media professor at the University of Southern California says this scandal is "a huge announcement to the world, not to trust everything you read on the internet," and believes it will cost Facebook many of its users. IMAGES AND SOUNDBITES