According to legend, Louis XI administered justice under an oak tree at the Château de Vincennes, adorned with his title of king by divine right. In reality, the one nicknamed Saint-Louis delegated the task to one of his subordinates. Facebook boss Mark Zuckerberg sees himself as the Saint-Louis of California. Reigning over the social networks that make up his empire, he decrees who has the right to express himself and who should be kicked out.