= "occurs where increased consumption of a good by one person does not decrease the amount available for consumption by others. Here allocation does not promote efficiency, since consumers do not consume anything in the traditional sense and there is no scarcity to allocate."
- Mark Cooper 
"When something can be consumed without reducing the benefits available for subsequent consumption, in other words it can be consumed without supporting a rivlary between consumers, it is said to be nonrivalrous in its consumption." (http://appropriatesoftware.net/wiki?NonrivalrousConsumption)