X Marks the Spot
Have you heard of Geocaching? If not, here's a quick run down. Boxes are hidden, literally all over the world, with their GPS locations posted online. Treasure Hunters can search out these boxes, taking one of the small prizes inside and leaving a treat of their own. You can learn more about the international craze at their official website and find a list of locations near you.
So what does this have to do with book marketing? Well, let me ask you a question. How excited would you be to go treasure hunting a find a free book at the end of the rainbow? Picture it there, hidden in a box filled mostly with stickers, pencils and happy meal toys. Now imagine that book was signed by the author and included a note that asked if you enjoyed the book to share it with a friend or to put it into another geocaching box.
If you don't have a physical book, consider leaving behind a bookmark or other small swag item with a card to get a free download of the book.
This is similar to the Leave Behind book concept, but in this case you have a specific place to leave the book instead of random places about town. Plus, you have the fun of finding the cache location to hide your book. Consider searching out places near where you live and adding new locations whenever you travel. You never who will find and fall in love with your book next.X marks the spot. Geocache