While these models have diminished in mature e-commerce and online advertising markets they are still prevalent in some more nascent industries. China is one example where Affiliate Marketing does not overtly resemble the same model in the West. With many affiliates being paid a flat "Cost Per Day" with some networks offering Cost Per Click or CPM.
The advertising company sets the terms of an affiliate marketing program. Early on, companies largely paid the cost per click (traffic) or cost per mile (impressions) on banner advertisements. A technology evolved, the focus turned to commissions on actual sales or qualified leads. The early affiliate marketing programs were vulnerable to fraud because clicks could be generated by software, as could impressions.
Affiliate agreements can be entered into by any type of business, from sole proprietor to corporation. Affiliating with another company is a good way to promote your business and make more money by joining with someone who has a proven track record and a larger customer base. But before you join an affiliate program of any kind, consider these questions (from Leslie Truex, Home Business expert).