Switch to thousandth BTC pricing?

[bosshyip]

We're inching up toward the first order of magnitude in the USD/BTC exchange rate.  Obviously, not everyone uses USD, but the same deflation should be seen across the board.  On bitmunchies, this is starting to make for some ridiculously small prices and significant differences between rounding options.  For instance, take a bag of popcorn.  With hundredths as the smallest unit displayed, a customer sees the price 0.07BTC.  However, the price is really 0.073BTC (calculated against USD to 8 digits), and if you buy three, it will add up to another 0.01BTC at checkout.  That isn't a lot, but I sure wouldn't want to lose 0.07USD due to hidden rounding costs every time I buy something.  I, for one, think it is time we added another digit to BTC transactions.