"All of which is to say that trying to save local bookstores from otherwise predictably fatal competition by turning some customers into members, patrons, or donors is an observably crazy idea. However, if the sober-minded alternative is waiting for the Justice Department to anoint the American Booksellers Association as a kind of OPEC for ink, even crazy ideas may be worth a try."
http://www.shirky.com/weblog/2009/11/local-bookstores-social-hubs-and-mutualization/