"SproutCore is an HTML5 application framework for building responsive, desktop-caliber apps in any modern web browser, without plugins." I'm personally not sure about this (though I'm interested), as it depends on JavaScript much more than it does HTML – possibly making it much harder for designers to use it.
These are necessary thoughts on what is missing from digital books. This includes powerful design principles from traditional book design, which should not have been forgotten because they are good design; it also includes powerful new things that e-readers make possible and need to be incorporated into modern book design. This, then, is powerful for digital book design and also insightful for design in general.
Jonathan Stegall is a web designer and emergent / emerging follower of Jesus currently living in Atlanta, seeking to abide in the creative tension between theology, spirituality, design, and justice.