Timebanking replaces money with hours as the unit of exchange. An hour spent teaching someone to use a computer is worth the same as an hour spent weeding a garden or driving someone to an appointment, which flattens the usual hierarchy of paid skills into something closer to equal community effort.
What makes it work is trust in the system rather than in any single transaction. A member gives an hour today and might draw on someone else's hour months later, often for a completely different kind of help, which means the network as a whole needs to function reliably even when individual pairs never meet twice.
The quieter benefit is social rather than economic: timebanking tends to connect people who would not otherwise cross paths, a retiree with spare afternoons and a young parent short on both time and money, and in doing so it builds relationships that outlast the specific favour that started them.