I just found a nice site that lists coupon codes for various online stores.

The site is retailmenot.com and it works. We've been looking at possibly getting one of those memory foam mattresses. We can't afford the $2,200 Tempurpedic ones so we're looking at cheaper versions. I found a really nice looking one on Overstock.com for $600. We're still iffy about it and trying to decide if we should try it. I found a coupon code on that site for 10% off at Overstock and put that in the cart and it took $60 off. Yay, it works.

Still haven't decided if we are going to get the mattress, but if we do, I just saved 60 bucks thanks to retailmenot.com.