Hi, I'm hoping someone can point me in the right direction.
I am trying to find out what I need to do to make my site replicable.

What I need is this.
When someone comes to said site blahblah.com
and signs up to the program I am promoting. They do not need to
sign up to my site,it's just one page promoting an affiliate program.

They then are able to promote my page but have the program
affiliate id changed to their id.

So when they promote the page
all they have to do is add their affiliate id to blahblah.com so it would look like this blahblah.com/r=id hope this makes sense

thanks in advance