I have seen this question pop up a lot lately and thought it would be interesting to run a poll to see what the public opinion is. I have stated publicly in my interview with Cliff Kule at
http://www.cliffkule.com/2013/04/kule-interview-bitcoin-adam-harding.htm that I believe it is not a currency but a commodity with money like properties (similar to gold).
Please give your answers and explain your reasoning.
To my knowledge bitcoin is defined as a commodity by most organizations pretty much except Paypal (it's against their TOS to sell alt currencies) and some banks.