Amazon is starting to see the writing on the wall, it seems. There isn’t a compelling reason for people to buy a Kindle anymore. Other ereaders offer the same price on books with more features and the latest wave of tablet PCs make the hardware look obsolete. So what does Bezos do? He releases a Kindle app for yet another piece of hardware: the Blackberry.

Amazon recently opened the floodgates with Kindle support for the iPhone, iPod Touch, and Windows machines. Today we get Blackberry support and the company says it’s headed for Macs and iPads next. If that doesn’t sound like admitted defeat, I don’t know what does. It’s funny too, considering the publisher problems Amazon has had since the iPad announcement.

“Since the launch of our popular Kindle for iPhone app last year, customers have been asking us to bring a similar experience to the BlackBerry, and we are thrilled to make it available today,” said Amazon’s Kindle VP, Ian Freed. There is at least one difference between the two; the Blackberry version doesn’t support creating annotations from within the app.

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