If you’re primarily going to be promoting Amazon products it’s important to choose a set of products that has a relatively high price point. After all, it’s hard to make a solid income off of promoting $1-5 products, since the commission on Amazon is so low. Items that have a higher price point, like high end appliances, furniture, BBQs, blenders and juicers, or bikes can net you over $50 a sale at least.
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.