Once you register as an iWantFuel agent you will receive a unique agent hot link. You can use this link to sign up clients. Once they sign up, they will be linked to your profile and you will receive half a cent per litre they order on every successful order they place in future.
It might sound like nothing but to put it into perspective In the petroleum industry volume is everything!
i.e. If you can sell 1000000 L of fuel per month, Your income would be R 5000.