Facebook shares: what's behind Mark Zuckerberg's 'hacker philanthropy'?

The tech billionaire was already one of the essential figures of our age. Now, with his $45bn pledge, he’s being seen as a generational Superman. But does a state-like level of spending run the risk of making him a ‘chequebook dictator’? Mark Zuckerberg drives a Volkswagen Golf. He pays himself an annual salary of a dollar. In 2006, at the age of 22, he turned down a billion times that for Facebook. In 2010, when his then-girlfriend (now wife) Priscilla Chan moved in to his hom