@mayel @artsyhonker I'm trying to better understand the context. The case in which there's no demand for a work to be done can't be fit into a currency trading scenario.
There must be someone needing for something and willing to offer something to obtain it.
A collective of people demanding for libre projects to foster (the demand) could evaluate or be asked to evaluate the work needed on others' projects (the offering). That'd fall under the classic currency-trading scenario.