The Time Trade Circle is a local bank – but we keep track of time. When you spend an hour of your time performing a service for somebody else, we credit you with one Timebank Hour. You can cash in that Timebank Hour on a service provided by another member of our bank. Whether you give a music lesson, take care of someone’s pet, volunteer at a community center, or help someone get to a doctor’s appointment, one actual hour equals one Timebank Hour.
http://timetradecircle.org/index.php