My point is that the USD price on Mt. Gox isn't accurate because it isn't liquid. If money comes in, but never comes out, how can you know that money is worth x amount? If I give someone x money and they give me something in return that they say is worth the same amount of money that I gave them, but I can't actually get that amount for it, is it really worth that much?

Have you performed a transfer recently? How long did it take?

The prevailing experience is that yes, you can transfer, but you may have a 4-6 week wait.