Give & Take provides a way to exchange skills and record effort in terms of time transfer using hourly units. This does mean you cannot make an agreement to include money payment in the mix. It's entirely up to respective parties and exchanges can happen without any form of payment if agreed upon. Your local Our Hubs group records only the hours involved in a transfer of time an energy and may help with reducing financial outlays but is not specifcally a barter system. This is one way communities can work together.