With so many affiliate marketing programs around, it’s difficult to know which to choose. How do you know whether a program will make money for you? In practice, it’s impossible to tell until you start promoting a program. Some programs can make hundreds of thousands of dollars a year for top affiliates, and make nothing at all for you. Be wary of choosing programs which are already being heavily promoted by others. When people are spending lots of money on PPC campaigns, it shows that the competition in this program is hot — you’ll have to compete against marketers who are more experienced than you are.