I recently discovered CaVirtEx, and it's remarkable for two things, which I believe are highly correlated:

• Easy cash withdrawals
• Significantly lower exchange rates (~10% below Gox)

So, here's my question: How much of the current price level of BTC is directly attributable to the fact that it's much easier to exchange traditional currency for BitCoins than the other way around?

What if there were an American exchange that made getting dollars out as easy as CaVirtEx does?  Would we see a massive BTC exodus, with an accompanying drop in value?