In Asia there are some websites where User A offers User B points for providing a service,. Usually it's like one point. For example - online teaching. User A teaches User B for a pre-set term, say 40 minutes. User B gives User A one point.
At the end of a month User A may have 9 points. These points are converted into cash on the basis of some standard exchange, like 1 point = US$5, and paid to User A's bank account or Paypal.