they pay you to fold, and it works like bitcoins i guess, but idk where the money comes from. Corporate sponsors?
Money? You get money for a cryptocurrency only when someone puts any value on it. So basically, you get "coins" as rewards for crunching the numbers (securing the blockchain, I think it's called). Now, some time later, someone may start trading the coins mined for real money/goods. It has not inherent value other than what people are willing to pay for it. This is most likely why cryptocoins start with very low values (like $5.10/"coin" (Sept 30, 2011)) but end up with astronomical prices (like $448/BTC [today's rate])
At least that's how I understand it.