When tracking all your affiliate earnings, this can be a little confusing, time consuming and even frustrating to some people. It is simple if you're only participating in a couple programs. But what if you're participating in 10? Merchants will supply you with your personalized link or code. Make sure you add that code directly into your page. Whether it's inserted in an email or on your website. Making any errors with this link or code can result in you receiving NO profit at all from your visitors. These codes are your unique ID so that the merchant can identify which purchase was made by which affiliate. Be sure to check over your work over and over again. I know it can be time consuming, but it will pay off for you.