Philip Rosedale’s High Fidelity Virtual World now has a Marketplace 1.0. A blog post made yesterday gives us more details on how to use it and its current purpose. See: Marketplace 1.0.
About payment systems Philip says, “we will probably initially tie asset payments to credits earned sharing computing resources with others (which is not yet enabled but also coming soon). Then real-world currencies. And yes, we are thinking about crypto-currencies and blockchains.”
This suggests that if you are running a Stack Manager and sharing your computer’s computing power, you will earn in-world credits/currency. Eventually the funds will likely be exportable as real dollars.