Here in Europe M-Commerce is sloqing rolling out. Vodafone has a product called M-Pay that lets users buy Tickets and other items and have them billed to either a credit card or the phone bill. Friends in Finland do not carry change for parking anymore; they just text the machine and it is credited to their phone bill. Even in Germany the networks have schemes, this is a country that likes to pay cash! Just as you were slow to see the value in SMS this is something that will follow once you start living in the Thumb Tribe! It will take you longer in the US as you don't have a single standard, the other issue is that because of size you cannot give blanket coverage. But the SIM card in your phone is more secure than the plastic in your pocket and so it is just a question of time before you take the technology, repackage it and then sell it back to us.