The hack allow ENCRYPTED Mobi files to be read on the Kindle. So you can buy a DRM-protected mobi book and read it on Kindle.
Kindles can read a variety of non-proprietary, non-DRM'ed formats. They read TXT, HTML, JPEG, and non-DRM Mobi files directly.
The Kindle is already able to read more than just Amazon DRMed content, it can handle a number of formats.
Non DRM Mobipocket format is already supported on the Kindle - just drag and drop.
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