Bartering / Trade / Time Banking
Barter and trade is another step towards a gift economy, but it is still a system of exchange. It is based upon your ability to negotiate a deal. In many cases there is a winner and a loser. It is good, in that it is a creative way to meet your needs without capital.
Money Crashers - 36 Bartering and Swapping Sites
The Simple Dollar - 13 Great Places to Trade Stuff
Barter Quest - Swap luxury items
Helping Network - Direct social exchanges for "karma points"