"Currencies today operate with two decimal spaces to the right ($1.00). In Bitcoin, there are currently eight so one could theoretically pay you 0.00000001 or one hundred-millionth of a Bitcoin. Not only is this confusing for consumers, it does not fit in existing systems and software for accounting practices."

So the standard would already have a rounding error of at least $1.80 (0.005 bitcoins). As soon as we go up again, that will only increase...