While I have nothing against BitCoin, what is really interesting to me and speaks to its volatility is that on most market places that accept bitcoin, bitcoin is the only medium of exchange, but due to it's volatility is not the unit of account. Instead, most goods are priced in dollars or Euros as the unit of account and then users have to calculate the price in BitCoin to use as the medium of exchange. It's a pretty unique set up that underpins the challenges facing an extremely volatile asset trying to play currency.