The duration is up to you, you can make it a week, two weeks, etc. You also choose whether you offer a paper book or a printed copy. As far as I remember, on Goodreads it has to be a printed copy. With LibraryThing, you can do both.Mobashar Qureshi said:A few more questions: what is the best duration for the giveaway? 1 week? 2 weeks? 1 month?