Share 'Open Source Currency - Will mobile phones enable ubiquitous LETS?'

What if we could use our cell phones to confirm transactions with one another as simply as pressing a button? We don't even need to shake hands with each other, only with the central server, which can confirm that both parties have agreed. As Paul put it in an email, "enabling the back-end for a truly decentralized marketplace with buyers, sellers, traders, and sharers is the open-source 'killer…