Correct me if I'm wrong, but isn't it impossible to withdraw USD from MtGox at this point? How can this be a viable source of BTC->USD comparison when the only thing you can do with a USD balance on MtG is buy?
I'd like to buy a pro copy of google sketch-up, and buy some lumber at this lumberyard that is cash only.
How do I do it if i can't withdraw usd?