Many people see the problems with an economy where money is created as debt. Some think we should go back to a system where money is backed by precious metals. A few like Daniel Suelo think we should get rid of money altogether and go to a gift economy. Either transition would be difficult, however. Jeff W. had an interesting suggestion on Of Two Minds that would act as a bridge: informal credit. Put simply, it's when you say "I owe you one" and mean it. More broadly, it's being in a community where favors are reciprocated. While the mindset is quite different from the gift economy, all that is really required to switch over is to drop the mental accounting.