This sounds a lot like a Potlatch network. Seattle Value Units:
The Seattle Value Units (SeaVU) System is a solution to scarcity, inequality and global dependence. Our mission is to support a vibrant local ecomomy and a strong community network. We are committed to public accountability, inclusivity, and personal respect.
SeaVU are printed bills representing the local value of goods and services. They can be used by anyone in the Seattle area. Once we reach critical mass, we expect to see SeaVU in use all over the city.
I think I’ve seen something similar to this before, I believe it’s called money, and it’s pretty popular too, you see it in use all over the city.
Yeah, that’s exactly what I thought too :).