Recommendations for site replication software?

[JasMate]

I am looking for a piece of software that will allow me to replicate a webpage in the following way.
Basically when someone comes to my site and sign up they will be given the exact same page to use as a promotion tool with their affiliate link automatically embedded into the page. Then when someone signs up on their page that new person gets a website with their affiliate link embedded, and on and on it goes.
I know there must be quite a few of these type software / scripts out there but can anyone recommend one? Don’ t know if they would be very popular if anyone around here would use such a thing but I would love a point in the right direction. I was also looking for the cheapest way of doing this so any ideas would be great.
It would be good to hear from anyone that has done this type of marketing strategy before and any advice they can give would be priceless to me.
Thanks in advance!