A little passion for turnkey affiliate software
The rare advertising systems that do not offer sales tracking can still be checked by using your affiliate software. Not tracking your campaign is going to leave you in the dark because you will not know how it is doing and how many people are being sent to your sales page by your marketing efforts. Google adwords and yahoo marketing efforts can be tracked by using affiliate software. If you have been exchanging links with other websites, you can track them with affiliate software. Advertisements you have paid for on other sites can be tracked too.