A bestseller (German: bücher) is a title that has sold the most copies. It is typically a novel or non-fiction book that has been widely circulated and received a good number of positive reviews.A best-seller is an important indicator for book publishers and retailers in determining which titles will be popular.It is also a source of revenue for publishers and bookstores by helping to increase sales of the titles that do sell well.The best-seller is usually an award winning work by a recognized author with high praise from critics and readers alike.In Germany, the most popular list of bestsellers is compiled by a specialist magazine called SPIEGEL and is published weekly.The best-seller list includes the top ten bestsellers in a range of genres. The hottest titles in the list include the top-selling novels, nonfiction works and children’s books.