I am in the process of creating a website where people can purchase things. I would like to set up offerwalls so users can complete offers. For example: I am selling t-shirts and these t-shirts cost $8.00 each. I want to set up a offerwall with a virtual currency so users can use it towards their purchase of the t-shirt. Do you need a certain amount of traffic to get approved from websites like sponsorpay,trialpay, radiumone, peanutlab and etc? Are offerwall allowed to be used this way? Thanks 
Also do you need a special script in order to run these offerwalls or do you just paste a code given to you by the website?
Also do you need a special script in order to run these offerwalls or do you just paste a code given to you by the website?