The rules of the barter economy are so strict, can we afford to be friends with friends at all?

Some, rather mistaking the spirit of the vending machine barter economy, left dollar bills.

A preserve for the barter economy and the transaction sealed by a handshake, this small slice of the city has sustained a unique way of life.

In a sense, since the turn of the millennium, we've built a 21st-century version of the old-fashioned barter economy.

Of course, the modern barter economy cannot solve all of today's problems.