As for Facebook, there has been a serious argument made recently that the most powerful man in the entire media is not Rupert Murdoch, but a 26-year-old called Greg Marra – because he is the man responsible for overseeing the company’s “News Feed”. As more and more of us get our picture of the world via the internet, the people who determine what the internet shows us grows more and more powerful. There was outrage, for example, when Facebook appeared to downgrade the importance of the first wave of race riots in Ferguson, Missouri, because its algorithms thought people would be more interested in celebrities taking the Ice Bucket Challenge.