The article below talks about micro payments in the context of almost everyone having computers, Internet access, credit cards, etc. What we are talking about is m-payments (m for mobile, not micro) in a world where those assumptions don’t hold. But there may be ideas we can pick up from this discussion. In Online World, Pocket Change Is Not Easily Spent – New York Times The idea of micropayments — charging Web users tiny amounts of money for single pieces of online content — was essentially put to sleep toward the end of the dot-com boom. In December 2000, Clay Shirky, an adjunct professor in New York University’s interactive telecommunications program, wrote a manifesto that people still cite whenever someone suggests resurrecting the idea.