What’s the difference between an ePub ebook and an Adobe ebook?
EPub ebooks offer reflowable text, which means that you can change the font, resize the text, or alter the size of your display and the text of the ePub ebook ‘reflows’ to fill the available view area. This makes ePub ebooks the optimal choice for reading ebooks on small screens. While Adobe ebooks are reflowable on some devices (such as the Sony Reader), one of the main strengths of the Adobe format is its ability to preserve the layout of complex documents.