Coupon codes, affilliate

Hi!

I have expeirence with creating webshops but not with the following;
I want to make a website full with coupon codes, once they click on the affiliate link and buy something i get my share.
How does one create a site like this?
Possible with joomla? What kind of extension would i need?

And how would i obtain these codes and implement them automaticly on my site?

Thanks in advance

The codes come from other coupon sites, just scrape them and add your affiliate link to the store.

How you build the site is down to you, Joomla would work but WordPress is more popular.