Affiliate Marketing Secrets

Hey guys so you all know about banners, a company makes them and gets affiliates to place them on their sites then when someone from that site clicks on that banner and goes to the companies site any subsequent sale is credited to the advertisers site and he is given a commission.
My question is, is there any way to do this with Facebook?
For example if I simply put a link on my fan page to someone site and then a Facebook fan of mine clicks it and makes a purchase, will it be able to get traced back to me?
Not sure if Im asking this right but you should get the idea. I have offers to advertise on my fan page and will get a commission of any subsequent sales.
Could this work?
How do companies usually track this kind of thing?
Thanks for the help guys 🙂