Develop and design a ecommerce-like site. No cart or payment gateway needed.

I am working on a startup that will congregate some of the most awesome and coolest products on the internet. We won't be selling any products but will redirect the users to e-commerce websites via their affiliate links. In order to attract users we thought of running monthly contest in which the user who purchases the most products via our website receives cash reward (there will a ranked list updated everyday). In order to do this we must know if a user is actually buying a product or not after he clicks the affiliate link. If he purchases he will be given the points for the contest accordingly in his account on our website. For eg- Suppose we display a product from groupon. Groupon affiliate links have the provision to add SubID to identify who clicked each link. To know which user clicked and performed a successful transaction we have to dynamically add the SubID in each groupon affiliate link keeping in mind that SubID for each our users will be different. Same way flipkart gives the provision of adding affExtParm in each affiliate link. But adding it dynamically for each of our user will be the challenge. This pretty much works like a cashback tracking system (like [login to view URL]) expect we are only tracking the user's purchase and not providing any cashbacks. You must be able to do the following- 1. Build affiliate links for each e-commerce website. 2. Track the user's purchase i.e if he is performing a successful transaction after getting redirected from our site or not, by dynamically appending the affiliate links. 3. Work on the front end and back end for the website. Sites similar to our idea- 1. [login to view URL] 2. [login to view URL] 3. [login to view URL] We are looking to work with people who are passionate about startups and can deliver the project in time. we would be inclined more to a team of people than individuals. We will also consider in giving 10% of the earnings for a year if we are really impressed by your work. Please mention your portfolio.