After reading the Wikipedia article on currency, I had a similar idea for a design for a currency.  Bitcoin, they say, is a currency not backed by a commodity.  However, there is a fungible, divisible, commodity that is readily available that could be used to back a pure virtual currency: computer time.  Not the computer time expenditure used to mine a Bitcoin, because that time has already been spent.  Rather, each unit of currency would be exchangeable for the ability to run a program in a sandbox on someone's computer for a fixed amount of execution time.  At some point in the future, this could actually work.  The currency would be backed by IOUs of computer time.  At present, I'm not sure if it would work because there is little demand by individuals to run programs on other people's computers.  But their idle computer time does have value, and the value could conceivably be driven by large organizations wishing to purchase mass computer time from individuals, that could provide a basis for a particular microeconomy.  Although such a currency would have its roots in a particular commodity, it could of course be used as a medium of exchange for other things.  It would also experience a high rate of technological depreciation as the value of one fixed unit of execution of computer time steadily drops (that would be inflation).  On the other hand, I think there is still a use for such a currency, since it would help manage the scarcity of available computer time and provide the virtual currency with a defined backing.

3b)For some reason the exchange doesn't go well. The price is wrong, or it takes too long, or the buyer left a bad review. Both buyer AND seller lose their deposits.

Coinhunter shit all over everyone's criticism while the price of SC2 plummeted

I'd like to see a coin with alternating blocks CPU/GPU.

IM means Internet Marketing.

Surely anyone good at internet marketing should understand that acronyming that term makes them sound like social media synergy cloud buzzword snake-oil salesmen.