That brings me to the issue of lock in and whether, in the new ebook world, it exists in any real sense. (eoinpurcellsblog.com)
This is standard practice in the online ebook world. (activitypress.com)
For libraries, too, it would address a lot of their concerns about ebooks, especially their fear of becoming a tech support network for all the complexities of the current ebook world. (activitypress.com)