I bought a universal media reader today, and got this in an email from the company shortly after.
We have a special money saving offer for you today. If you would like to receive a $5 credit back on your credit card for this order, simply post a link to [company URL] on your website (with a short description of our products). When finished, email us the web address where the link is posted and we will give you a $5 credit back on to your original credit card.
Good idea? Who knows. Can’t hurt, I suppose, since they probably build the extra $5 into the purchase price.