As the use of online promotion increases for book authors, so has the use of viral book marketing courtesy of VidLit, BookShorts, TeachingBooks and BookWrapCentral, companies that produces videos to hawk books and their authors. VidLit charges about $3,500 to create a :60 video and recently helped authors Ellis Weiner and Barbara Davilman sell 150,000 copies of their book, Yiddish With Dick And Jane.
