Couponing basics- ethics questions

I just read a great post on hip2save about whether its ok to use 2 manufactures coupons on a buy 1 get 1 free sale. The answer is YES because the store gets paid the amount of the coupon plus 8 cents by the manufacturer so they are actually making money on the product that they would have been giving away for "free". This was a great post that I think everyone should read. Go here to read it yourself!