Man, this stuff gets technical fast. What;s to stop opponents of this medium of exchange from mining it into value-less-ness with a high frequency trading set up?
They'll need to have a lot more processing power than the entire legit bitcoin network I believe in order to mine enough coins to trade at high frequency and high enough volume to make a difference. And given that we might have the largest hashing capacity network in existence, that would take a fair bit of cash and hardware, which might drive the cost of hardware cheaper for legit miners and so make it even harder for them to crash it.