I went for an oil change today and was waiting in line when I noticed I’d forgotten a coupon to save a few bucks on the service. So, I looked up Scrub a Dub on my iPhone and found a $6 off web coupon that you are supposed to print out and bring in. I showed the coupon on the iPhone to the attendant and asked him if I could use it even though I didn’t have a paper copy. He looked at the image on the iPhone, chuckled a little, and said “Why not!”. Sweet! Another $6 saved by having the iPhone.