The problem with BitCoin is that there is nothing substantive backing the economy, which gives speculators zero incentive to keep prices stable (which is the point of speculation). Speculators in the BTC economy are simpy trying to inflate the currency to make money quick, and sell the profits on MtGOX, there's nothing to be gained but the USD/BTC exchange rate. Until there's more services offered that cater to the speciality of BitCoin (Silk Road, selling online accounts/game currencies, things that require anonymity/decentralization) we're just going to see endless rises in the value, and then crashes as people sell off their coins.
First things first. There needs to be more bitcoin in the market to provide liquidity. Stable prices will build confidence and acceptance. Needs more time but it will happen if gov doesn't steam roll it.