... As research, this work was short-lived. The complexity of these schemes relative to their benefit,combined with the environment of time-shared systems(mostly cooperative, mostly controlled by ... not see the value of maintaining their portion of the network beyond their initial required contribution.Whereas these users may not respond to an allocationof a closed virtual currency, they ... Operatorsof these online games either openly support the exchange of their cur-rency into other real currencies [24], or attempt to keep their currencyclosed, effectively incenting players to open these...