About 250-300 words, the feedback we give the author includes a summary to give readers context, together with a concise, unbiased opinion that can be positive, negative, or, most commonly, mixed. Each feedback summary details a general sense of a book’s worth. The summary also includes specific information about the book's strengths and weaknesses.

Whether positive, negative, a mix of both, you'll always have the choice of keeping the feedback private and use it to improve your manuscript. Otherwise, you can publish it and use it to market your book to readers.