Michael Pastore at Epublishers Weekly blog posted a stress test for ebooks. His test gives points to ebooks for the ability to complete tasks, like sharing with friends, converting, and printing. The full test is on the blog, check it out.
Here’s the intro material: How healthy is your ebook? … Is your ebook free, flexible, strong (long lasting) and brimming with useful features? … Or is your ebook feature-challenged, a hapless prisoner of one specific device, format, or content protection system?
There is much debate about ebook pricing; there should be much more talk about ebook value. A free and healthy ebook is worth much more than a feature-reduced ebook.