-- Social media pages geared toward providing readers with discounted books — Newsletters geared toward providing readers with discounted books or reviews
of books at any price — Blogs that feature books from specific categories, discounted books, or book reviews — Any print publication that reviews books — Email
lists that provide libraries with information about books, either with or without reviews — Distributor catalogues that provide bookstores and libraries with information about books, either with or without reviews — The algorithms that trigger «you might like» and «buyers also considered» recommendations on internet sales sites — Consumer reviews Notice the
emphasis in most
of these
areas on reviews.