Amazon has introduced a Kindle app (beta release) for BlackBerry devices [US only]. This Kindle app will provide more or less all the features of a regular Kindle e-book reader, just like the iPhone Kindle app. So, now you will be able to browse the Kindle store for books (which now has over 400,000 books), purchase e-books, download samples, read the beginning of books before purchasing one, straight off your BlackBerry. The app doesn't come with a price tag and currently works only on those BlackBerry devices that are served by AT&T, Sprint, T-Mobile and Verizon networks.
Amazon has also ensured that it will provide platform independent syncing support to its users. Therefore you will now be able to sync your e-books(i.e access any previously purchased books of a particular account), bookmarks across all the compatible devices including the iPhone, iPod Touch.
Visit 'amazon.com/kindlebb' from your BlackBerry to download your copy.