A 'new' model for ebooks

If Amazon's Kindle device (other devices are available!) is ‘the iTunes for ebooks' then what is the Spotify equivalent? (Spotify provides free and fee music streaming to users in a number of European countries).This week, the Spanish initiative 24symbols has announced it is to offer on-demand access to a library of popular ebooks in a model similar to that of music streaming.  Integration with Facebook provides a social element to the service.You can read more about 24symbols, including a review of its current, beta format on thenextweb.com.