It's a blossoming romance worthy of a Di Morrisey novel. For years readers and publishers relied on third parties -- think the local bookstore or a literary festival -- to act as chaperone. Now, thanks to technology, publishers are creating new ways to chat up readers -- and convince them to buy a book.

Social media and websites are a major plot development, but not the whole story. YouTube videos -- such as book trailers and author interviews -- have been embraced by publishers, with many building studios in their offices, training staff and employing production companies to create regular content. Publisher websites are now often full of online quizzes, competitions and updates from authors. Some book titles now come with their own app.