So holds SEC v. Shavers (E.D. Tex. Aug. 6, 2013), a case involving the failed “Bitcoin Savings & Trust”:
First, the Court must determine whether the BTCST investments constitute an investment of money. It is clear that Bitcoin can be used as money. It can be used to purchase goods or services, and as Shavers stated, used to pay for individual living expenses. The only limitation of Bitcoin is that it is limited to those places that accept it as currency. However, it can also be exchanged for conventional currencies, such as the U.S. dollar, Euro, Yen, and Yuan. Therefore, Bitcoin is a currency or form of money, and investors wishing to invest in BTCST provided an investment of money.
Thanks to the Media Law Resource Center MediaLawDaily for the pointer.