Today Amazon.com launched Kindle, an eBook reader that allows customers to download titles directly to the hand-held device.

While eBook readers are nothing new, Kindle is a killer app. Why? Because it solves the problem of adding content quickly and easily. In the past, eBook readers required repeated syncing with a PC. With Kindle,  content is delivered via WIFI and EV-DO. That means you can get your content–like books and newspapers–at home, at work, in your car or on a bus.

The Kindle device is priced at $399 and books are $10, so we’ll need to see a price drop before this really takes off.