Click on the link and it will start out with Coupons.com. You can switch to SmartSource coupons using the link on the right hand side that says more coupons.
You can also sign up for this site. You earn points for searching the web, buying certain things, or even using the printed coupons from this site. You can redeem the points for free stuff. I don't do anything special for my points (I used to click on the emails they send for more points but I'm too lazy now) and I already have 4800 points. I need to see what I can get for them.