If you are already had an affiliate program, what should you do to increase your earning? Here what you can do:

• Choose the products that have a generous commission structure and suitable with your website category. If your website is about stock investing, choose program which is associated with stock or investing.
• Choose great product because it is easier to sell great product. It happen with me with Ken Evoy's product.
• Create a free ebooks, and collect email addresses who download the free ebooks. You need to send out your email more than six times to make a sale. You can make follow-ups and remind them to make a purchase.
• If you are already successful with a particular promotion, ask for higher commission from merchants. If the merchant is smart, they will likely grant your request, because you are already show them how good are you.