Quote:
Originally Posted by PaulAuster
I am not speaking, of course, about .pdf or .txt based e-books, but those with copyright protection management.
Also, what happens if I want to transfer an e-book to another reader or read it in my computer? Could you also backup your files in case the reader dies?
As conclusion, I wonder whether EPUB is widely accepted enough for this purpuse (like a jpeg in photography). Trust a propietary format like Amazon's does not seem a good idea (.dng is from Adobe but licensed-free).
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EPUB without DRM or with social DRM such as the one used by Pottermore is a good format to archive. It's based on standards (HTML, XML, ZIP, etc) and it's easy enough to disassemble in the event of EPUB readers ceasing to exist (highly unlikely).
However, anything with obtrusive DRM (e.g. B&N, Adobe), I wouldn't trust for long term archival. That's why every ebook purchase I make immediately get disinfected.