Companies fear that if its users, like the French teacher, win cases against them, it could require them to tailor-make their sites for each specific country’s laws — an expensive task even in the E.U., which has 28 member states. That makes the issue of jurisdiction key to many cases. “This question that is on everyone’s minds right now, not only for Facebook but also Google and Twitter, because all these entities have international scope and reach,” says Adam Holland, project coordinator for the Berkman Center for Internet and Society at Harvard Law School. “We don’t want to let local laws dictate global policy, because where will that end?”

Source: Why a French Court Could Disrupt Facebook’s Global Ambitions | TIME