People were duped into sending a partial or full payment to a third-party agent via a wiretransferpayment service and to fax their payment receipt to the seller as proof of payment.
As an example of the disadvantages of incomplete information, I jut waited 10 days for a payment from a client that left out a crucial number on a wiretransfer.
Each country has different rules for different forms of payment and the fees you have to pay for, say, a wiretransfer, are likely to vary all over the map.