There is one obvious use case where it's already in use: illegal trade. The article mentions it as an aside but it's definitely not small business; if half the

There is one obvious use case where it's already in use: illegal trade. The article mentions it as an aside but it's definitely not small business; if half the world's drug, weapon and human trafficking trade were to happen in bitcoin, it would justify the current exchange rate and then some. Of course, that would force governments to outlaw the exchange services, which would make bitcoin way less attractive to criminals and law-abiders alike. To me that seems like the most plausible outcome of all this.