I thing anytime you can get money back from a purchase without pretty much doing much of anything but using specifics linds and coupons....then go for it - samving money is a good thing!
Ebates is a free, and really easy to use online shopping portal. Basically it gives you cash back whenever they whop online through Ebates - it takes them directly to the site of more than 800 name brand stores, including Barnes & Noble, Circuit City, Target, Office Depot just to name a couple of big ones!
CNN even calls using Ebates "A No-Brainer"! Not to mention that they always have the latest and most up today online coupons and deals on the Internet. Why pay full price when you have Ebates!