Olomana, this does not solve my puzzle.  I have already taught myself how to increase both.  There is a model that says one currency is better than another.  I would love to claim BC as my currency of choice, but practical concerns make me vote for US dollars.  I have services to offer.  I'm not convinced that offering them for BC will enamour me to my clients.  So I try to fish for more USD than BC.  I want to hear from people that are playing it the other way around.