If you read a book that you downloaded from your library or even Amazon Kindle, when you finish the book, chances are, you were prompted to write a short review. Why is this so important? Did you know that authors who sell their books online, whether it is Amazon or Barnes & Nobles or any other book vendor, have their books rated according to the number of reviews they receive. A good review will affect how well a given novel is promoted or how frequently it is offered to the reading public.
Authors pour their souls into picking just the right word for that scene or dialog; they struggle to tell their stories with the most illustrating words to tantalize the reader, to draw visual pictures and to convey emotions. The next time you finish a book that you enjoyed, remember to thank the author with a few words of praise or some small comment to let the author know you appreciated his/her work.

Atlas Shrugged