Hi Adebayo
As an SFI affiliate, you can/should use Key Codes in all your advertising. By embedding different Key Codes into your various advertising efforts, you can easily and quickly identify where your results are coming from--which ad sources are pulling, and which ad sources are not.
I won't re-write what SFI has already written. To learn more just go here: www.sfimg.com/Support/Solution?id=19365.
I think this will help.
Thank you