Amazon finally released their free Kindle app for BlackBerry devices.  This app is supported on the Bolds 9000 & 9700, Curves 8520 & 8900, Storms 9530 & 9550, and the Tour 9630.  Right now this is only available for U.S. customers so that is a slight down-side.  Here are a few features from Amazon.com.

• Get the best reading experience available on your BlackBerry. No Kindle required
• Access your Kindle books even if you don’t have your Kindle with you
• Automatically synchronizes your last page read and annotations between devices with Whispersync
• Create bookmarks and view the annotations you created on your Kindle, computer, or other Kindle-compatible mobile device

Visit http://amazon.com/kindlebb from your BlackBerry browser to download the free app.