be careful when choosing an affiliate program.

[Spiral]

As an affiliate I was fairly successful. Sadly for me the company for whom i worked is not honest. I made bunch of sales for them and in return... they will not pay me. One of the sales leads simply disappeared the day before pay out was supposed to happen. I have tried contacting their affiliate rep, but I get nowhere. I have spent a lot of time and money promoting their product and in return... I get nothing.
So the point is: be very careful when choosing which company you'd like to be an affiliate for. Their product might be great and their customer service is good, but they might not be good at all to their affiliates. research the company.