hosted galleries, 
good content for affiliates, 
and easy to navigate cash program, not too much of that you have to fill in all your info including your SIN to get to the cash site, 
have an icq number on the contact page for special requests, 
Have an affiliate manager who is not an ass 
I've worked on two affiliate programs and in general people are really cool and you don't get too many weird requests, it should be a fun ride. 
50% is a good incentive but 60 is a  little bit better of course , you can always make something where you bump it up to 60 after 25-50 sales. 
if you have questions and stuff hit me up  icq: 271697529 i'm always there to help, and to make people avoir the mistakes we did 
