Also remember if you do checkout online--you can link through Upromise or another such rewards site for extra $$. Last week I bought a grill, after someone posted the 20% coupon link--and just by checking out through Upromise got an extra $6.46 (3%) put in my account. I picked up the grill at the store--paid the same price; so it was like a little extra bonus on my grill.
Do they email this to you or you print it out right away... lol, I am on my laptop and not feeling like I want to turn on my other computer right now....