Interline PublishingInterline Publishing, interlinepublishing.com enables you to purchase, download and read content from various publishers and authors.Content can be read offline as well as online. Independent authors and publishers can upload their content for world-wide marketing, determine the price at which they wish their content should be downloaded and earn royalty on the same. Authors and publishers can send free copies of their work to any number of people anywhere in the world and this service is not charged. Authors and pub.