There are several houses downtown that have “take a book, leave a book” wooden boxes posted at their curbs. I have left my “business cards” — copy of my book cover with google shortcut and reviews on the back — as bookmarks.
I’d forgotten all about it, then one day, a lady asks to friend me on facebook — She’d read my book and posted it on her page with a review. “Thought I’d give this new author a try. Book’s a hoot.”