One of the best gifts you can get!
Actually my first experience with this was when Backcountry.com sent me an email telling me that I got $10 off my next order. The email said that it was just $10 off, straight up, no strings attached. The offer expired in a few weeks so I didn't want a free $10 to go to waste. I decided to put the "no strings attached" promise to the test. I was happy to discover that I could indeed use my free $10 towards a $25 gift certificate, locking in this free money for two years. I later used this gift certificate towards the purchase of much needed clothing. Can't think of too many places I'd rather get a gift certificate for.