As mentioned merchants will pay publishers a certain commission when they’re directly responsible for driving a sale. So when you look for merchants to write about, or products you want to review, keep in mind what commission rate they pay. The better the rate, the more money you’ll make if you drive a sale. If you can combine a high commission rate with a product you believe in you’ll have struck gold.
When there are multiple affiliates involved in one transaction, payment gets much more complicated. Sometimes it’s even possible for affiliates to jump in at the last minute and claim commissions for customers brought in by other affiliates. Successful programs use multi-channel attribution to ensure the affiliates that create the most value get paid the most.
You might be curious about how the merchant knows which affiliate is responsible for the purchase. That’s actually the easy part since every affiliate is given a unique link that tracks each product they promote. This lets the merchant track all referrals using cookies to ensure that they know exactly how much money they’ve earned thanks to each affiliate (and what to pay them in return).
You should also make sure you aren't competing with your own affiliates for eyeballs. Any marketing channels you're using, such as search engines, content sites or e-mail lists, should be off limits to your affiliates. Put marketing restrictions into your affiliate agreement and notify partners immediately. It's your program--you set the rules. Or, if you prefer, you can let your affiliates run the majority of your internet marketing.