Unique Affiliate Link Generator For Contest Raffle Tracking

We are looking to launch a contest for our facebook page. The way the contest works is when you like our page or already a member of our page, you click on a link to enter the contest. 1. You automatically get 1 unique digital raffle ticket to be entered. 2. Once you receive your first raffle ticket, you will receive a special unique referral link which you can use to post on your wall, via email etc which sends new contestants to our page. When they like our page, they get a digital raffle ticket and in turn the person that referred them gets another digital raffle ticket. 3. We will need to track which contest has the most raffles and be able to digitally run a raffle to be selected. They will have to LIKE our page (we will set up a page which will reveal the contest link when they like our page) or if they already LIKE us will be able to enter contest. Here is an example of a site that uses something similar. When you signed up for their webinar, it sent you to this page which automatically generated you a special referral link: [login to view URL] Hope this helps and makes sense to what we are looking for. We've had offers from other outsourcing sites and want to see the quality of response on freelancer.