Elizabeth One solution to the quality problem is to allow multiple submissions of the same book in the collection. Because of all the vagueries involved as outlined in a previous post of mine, there is no reason to believe that any one submission of a book is going to be the optimum one. A so-called good book replaced by a so-called excellent one may be inferior or superior given what someone needs. Is, for example, a book that gets a K1000 spell rank of 99.95, but fails to include contents, chapter designators, proper page breaks better than a good one at 99.34 but has every page break, includes reference material, et al. That's a judgment call. Rather than having the "excellent" replace and kill the "good" copy, why not let them sit side by side allowing customers to retrieve both and perhaps, combining the 2, get what they need. Unlike the local Borders or public library, Bookshare books are seldom, if ever, publisher replicas. Thus, given all the vagueries, 2 separately prepared copies put together by a subscriber may give needed info. Much of this may matter little with the romance novel, the mystery thriller, or story book. It does matter with textbooks, recipe collections, books used in researching, a reference work, et al.