If you visit Amazon's site, you might just see a huge placement for their new Kindle BlackBerry app. The Berry joins the iPhone and desktop readers, and you can read any Kindle book you've purchased on your BlackBerry. It automatically synchronizes the last read page, supports bookmarks and annotations.
How to get it? Type amazon.com/kindlebb in your BlackBerry web browser's URL bar. Or visit Amazon from your desktop and send the link to your RIM smartphone.
Supported models: Storm 9530, Storm 9550, Curve 8900, Tour 9630, Curve 8520, Bold and Bold 9700.