Bitcoin embodies the idea of a new form of currency introduced in 1998 by Wei Dai. The general idea is that money can be pretty much anything, as long as it's universally accepted as something of value, and right now most people use a currency which only has value because of its endorsement by their government. Bitcoin is designed with the idea that cryptography will control the creation and tranfer of money and not a central authority, so it is totally peer-to-peer and entirely controlled by the market. Bitcoin itself has properties that make it primed to take over the world of online casinos. Anonymity is key here, as with some bitcoin casinos you don't even need an account to start playing. Bitcoin also allows for quite a few new improvements from the current model of casinos.