The latest reinvention of traditional book publishing comes from California-based start-up Vook, which integrates text, video and social networking to deliver a new entertainment experience. Available both online and as a mobile application, “vooks” are book-video hybrids that feature short video clips—produced exclusively for each title—interspersed throughout the digital text. The videos are designed to enhance the story, advance the plot in fiction titles and add depth to practical information offered by non-fiction publications, offering visual how-to’s such as cooking demonstrations. The online Vook Reader allows readers to interact with each other via inbuilt social media functions. Vook launched in…