http://seekingalpha.com/article/1536832-does-the-world-need-a-bitcoin-etfA recent survey of leading economists by the IGM Forum showed an overwhelming consensus that the primary driver of bitcoin value is speculation on the asset's future acceptance as a currency. Today, the number of businesses that accept bitcoins as a form of payment is extremely limited, a state that is likely to persist in the face of bitcoins' volatility: In 2013, the price of a single bitcoin has ranged from $13 to more than $200, with extreme fluctuations regularly occurring over the course of minutes. Bitcoins are best conceptualized as a highly speculative commodity whose volatility is driven, in part, by price manipulation and its faulty infrastructure.
Link to the IGM poll:
http://www.igmchicago.org/igm-economic-experts-panel/poll-results?SurveyID=SV_8qRwhHaLc7b5Sp7