The link is unique to me. It TAKES you to:
http://www.football-rulebook.com/?hop=otrap1
The site itself is
http://www.football-rulebook.com/
The ?hop=otrap1 is a variable that means my affiliate account at Clickbank (otrap1) is the one connected, so if anyone buys, my account gets credit.
Clickbank allows a cloaking to hide affiliate and vendor names, which is why the link above looks like "http://<insert-random-characters>.hop.clickbank.net." The random characters are where the affiliate and vendor ID would normally be.
It is cookie-based, so if someone clicks my link, a cookie tracks if they buy. If they do, $$ for me.