That can work too, you know? One good service for another, I think everything has someway of making profile even if we're not exchanging money. --And with goods or services being exchanged we're being more and more useful by the second.

Always keep things moving, that's true for a lot of things. People, pokemon, goods, and your skills. So even though it doesn't sound like they used money, that doesn't mean they weren't doing business.