This is a great interface and easy company to work with. They're support and ability to customize the modules was greater than expected. Highly recommended!
I was looking for such module for a long time then eventually decided to order a custom built one. The lowest quote I received was over a $1000!! So I was really happy when I found the Affiliate Manager. It does exactly what I need. It gives me a lot of control over the affiliated program terms but most important that it can be easily integrated with any other modules I currently have (like shopping cart or a membership signup module). This allows me to pay affiliate only if their referral has actually purchased something on my site. In addition, STP Systems has great customer support. The turnaround was quick and the issues were addressed immediately. Recommend this developer to everyone!