Originally Posted by Andrew H.
The iPhone and iPad are walled gardens with respect to apps. This means that the only apps you can put on your device are from the app store. Strictly speaking, this is the only walled garden.
Kindle is not a walled garden because you can put e-books from other stores on it. Or you can put your own documents on it. There is no "wall". The same is true of all e-readers, afaik.
Even iDevices only have a walled garden with respect to apps. You can put mp3s (and certain other formats) on iDevices with no "wall."
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