You're welcome on the buy.com link. I was going through their rebates the other day and noticed it. Thought it was a great deal on something I have absolutely no need for, so I thought I'd share.
Ebates is a money-back shopping thing. You have to visit the site ebates.com. Register for an account, and they spam you and such and give you a free e-mail account. But anyways, you make purchases at different stores by going to the ebates site, then clicking through to the various stores. A lot of big name e-tailers there. Anyways, for everything you buy at those stores by clicking through ebates, you get a percent back of your purchase. It's sent as a check, every three months.
Anyways, the tricky part is using a coupon. Open a browser, find that buy.com coupon, click it and make sure it's in your basket. Then, open another browser window, click to ebates, click to buy.com and the coupon should still be there. Buy away as per normal.
Buy.com is currently only two percent right now, so it's a hell of a lot of work to earn $6 or so. That's why I quit using ebates, myself. Just thought other people might be using it...
--Christopher