I am an avid reader, often reading a book a day. However, my cleaning lady occasionally shelves my unread books with my read ones. Since I'm terrible at remembering titles, I often begin a book only to realize I've already read it. With this great application, I can keep separate lists for unready and already read. I haven't tried to add new fields yet, but I intend to add fields for "donated," "sold," "loaned" and "given away."