Bitcoin: What is the Value of Hot Air?

Let self-interested promoters and their acolytes in the Media invest their hard-earned savings in a bit of (hot) air, or better: some digits in a far-away computer that nobody controls. Shares (hopefully) pay dividends, bonds pay interest, land can be rented out, but bitcoins and the like? Nothing but the hope of finding a Greater Fool down the road.
And Bitstamp, a 'digital currency exchange', should it not be banned from calling itself as an exchange by the SEC and fellow regulators? No surprise that its chairman sings the praises of 'crypto' 'currencies' (their are neither crypto nor currencies, you might as well start paying your groceries with some rare shells)
CNBC