Nomad economics is one of collective contribution, sharing and exchange. In the tribe, the fate of one is the fate of all. Hence, individual accumulation of resources would amount to choosing living with objects rather than people.
Exchange does not necessitate money. It is not monitored by the global market system, it functions on a parallel plan.
The internet, with napster for instance, proved to be a good space of exchange. Web designers, musicians, artists and all professions relying on collaboration increasingly engage in informal exchange of goods and services.