"The workings of this system of trade stem from the same motivation of "fun" present when Colin Needham developed the Internet Movies Database - which, built upon newsgroup discussions, is half-dynamic. It is Needham's need to "put back" into the Net after having "taken out" so much that drives most trade in dynamic resources. It is the cooking-pot market of a seemingly altruistic value-in-giving norm that drives the economy of interacting people.