Allreaders.com is a search engine that finds books based on specific plot details. Readers, authors, and publishers are invited to submit books and reviews. The reviews are not extensive and are presented for the purpose of finding books by genre. Six genres are available...SciFi/Fantasy, Mystery/Thriller, Literature, Biography, History, and Romance. If you like a certain type of book or author, this is a good site to find other books that match your tastes.