Kindle Singles are short stories, articles, posts or opinions that do not fall into the conventional space for magazine or print – typically 5,000 to 30,000 words.
Kindle Singles Launched by Amazon
The Amazon Kindle Single is a new form of content that joins the ranks of books, magazines, newspapers and blogs in the Kindle store. These 30- to 90-page e-books are splitting the difference between the feature-length magazine articles and shorter books.