So, why is gold still so important in a modern digital financialized economy. Well, a lot of it has to do with this fact that central banks are the world's biggest holders of gold. They have been net buyers of the yellow metal every year since 2008.The fact that they're buying tells us two things. First of all, they don't think that gold is a commodity. They think it's money. They think it's a currency.Secondly, it also tells us that they would rather be buying gold than buying one another's currencies. Wel ...