SFI does have a tracking system to where you can organize and track your advertising. It's in your "Power Tools" tab on the SFI Homepage. You can use that to your advantage in ways. When you start to have hits on your sites using those links with the trackers in them, you start to know more about which websites are more effective vs which websites aren't effective. It's only a matter of experiment and pick in this situation. Good luck with everything.