Good question. I was wondering the same thing. I think I have a book I don't need that I can check it with.
Could save on storage space, eh??
Okay. I have a book in my library that I attached an Wikipedia page to but have finished reading. I deleted it from my download file then opened it from the Library. No problem. Still there, attachment and all. Just to be sure I rebooted and file (epub) still gone from download file, book still there and complete in my Library.
Maybe I'll go through and delete a few more things from my download file. I was wondering if we need to save the download of apps, too. Might try that next.
