The issue is going to be how to get your non-DRM mobi books onto your Blackberry and into the app. If the Kindle for Blackberry app is anything like the Kindle for iPod app, I don't know of a way to get non-Amazon books into the app.
Folks have figured out a way to pull books out of the Kindle for iPod app but I don't know if anyone has been able to reverse the process with books from another source.
|