Fool analyst Rex Moore says Amazon.com's
The Barnes & Noble
Not many people know you can check out library books from the comfort of your home and download them to your e-reader. They expire after a set amount of time and can't be read unless they're checked out again. (Check with your local library to see if it offers e-books, and how large its collection is.) This is quite an amazing feature; if more folks knew about this, it might really accelerate e-reader sales.
Rex doesn't expect Amazon to support the ePUB format anytime soon, for competitive reasons. Management wants to keep a proprietary, closed format to keep Kindle owners buying e-books from the Kindle store. This greatly increases switching costs, because when it's time to buy a new device, a user with dozens of e-books won't switch to a device that can't display them.
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