In order to promote its service to read free book abstracts on Liviato, the berlin-based Start-Up released a Podcast today to let people listen to the book extracts of the most popular books on iTunes. Users can subscribe to receive new episodes for free and to stay updated with the latest literature without reading all books. Liviato is also giving away books for free to the Twitter Community every week. Liviato was launched in April 2010 and generated more than…