I'm going to wade into unchartered Slips waters today and head into Bitcoinland. I've been trying to understand Bitcoin from a payment systems perspective, where it has an interesting problem and solution: double spending. The lesson in all of this is how Bitcoin has a sort of built in seniorage--payments are never free. Currently Bitcoin builds in its costs through inflation, which is not particularly transparent, but that will ultimately change to being more transparent--and salient-- transaction fees.