John,
I think I would prefer bartering to cash or plastic. I'll exchange a fish for your chicken, or I'll paint your barn for three squares a day.
Ah, how uncomplicated life would be; no identity theft, no telemarketers; just using the talents that one has to procure what one needs.
Hmmmm. Then there is always the possibility that the fish would smell after three days, and that would give the chicken man the edge...
Wait a minute! Let me rethink this.