it's a linky...click on it. ;-)
for this one, you plug-in your store rewards card numbers once you set up an account, and then you "load" the coupons to your account. BUT, they don't come off of your total at the register. instead, when you purchase one of the items at one of the stores with your reward card, the amount of that coupon is put into your savingstar account, and once you reach a certain amount ($5.00, i think) you can cash it in for gift cards, etc.
now...you could spend time matching these "coupons" with your other coupons and grocery sales and if you have time to do that, it's probably the best way to use the site. i choose to load up all the coupons i think i MIGHT use at the beginning of each month, and then i don't think about it again until the next month when i log in to load up my cards. it's kind of a fun surprise to see if i've gotten any money in my account over the past month, and i don't spend much time on it at all. (note: because this does not affect your total at the cash register, it is not like the cellfire coupons that will cancel out your paper coupons at Kroger and other stores. you can still use paper coupons with these.)
let me know if you're already using savingstar and any tips you have...