Apple's move seems to be pushing ebookstores quickly toward cloud solutions and web apps. Maybe its time to revisit the ideas explored in this thread,
BOOKS IN THE CLOUD without the acrimony.
I'm rather disappointed at the folks who show up to huff, "This app doesn't offer perfection, so what's it good for!" Kind of shows a lack of imagination. Plainly, its a 1.0 version application, but also plainly, there is a lot of potential here.
The KCR was rolled out as a riposte to Apple's -in-app purchasing move. Currently, its one advantage is that it has the big Kindle Store link in the corner. No big deal really, and its unlikely Apple will be shaking in its shoes over this. The most tech challenged Ios customers are still going to head over to iBooks if they can't figure out the Safari bookmark thingy, which is even simpler than going to KCR.
Where KCR might shine is is they offer a cloud subscription model, a la Netflix, or some kind of new pricing model. They would have to convince the publishers to join in , too-which some publishers might. In any event, Apple's move seems to have started a whole new ball game.