The Commercial Appeal here in Memphis has released a Garage Sale Finder Application for the iPhone.
This is a very resourceful little tool. Perfect for the iPhone and how it all works together with the GPS and your Google Maps.
If I was having a garage sale I would advertise with the Commercial Appeal because I want iPhone owners at my sale. If you are willing to pay a few hundred dollars for a phone and pay top dollar for accessories, then you just might be willing to pay sticker for my old lazy boy and VHS tapes!