Ask questions first before you join an affiliate program. Do a little research about the choices of program that you intend to join into. Get some answers because they will be the deciding point of what you will be achieving later on.
Will it cost you anything to join? Most affiliate programs being offered today are absolutely free of charge. So why settle for those that charge you some dollars before joining.
When do they issue the commission checks? Every program is different. Some issue their checks once a month, every quarter, etc. Select the one that is suited to your payment time choice. Many affiliate programs are setting a minimum earned commission amount that an affiliate must meet or exceed in order for their checks to be issued.
What is the hit per sale ratio? This is the average number of hits to a banner or text link it takes to generate a sale based on all affiliate statistics. This factor is extremely important because this will tell you how much traffic you must generate before you can earn a commission from the sale.
How are referrals from an affiliates site tracked and for how long do they remain in the system? You need to be...