Abecedary, glad my commentary on Christie, Agatha: The Mysterious Affair at Styles. v2. 29 Aug 2009 was helpful --- I know much of what I commented on is a limitation of the viewer, but that's what this whole conversation turns on --- whether or no one should accept such limitations.
Obviously, I find it expedient to do so, and read a fair number of books on my Sony PRS-505 as either .lrf or epub, but I prefer it when I can find the time to make a typographically perfect .pdf (for those who're curious, I've .pdfs in the TeX Showcase, and also made the .pdf version of Mike Brotherton's _Star Dragon available from
www.mikebrotherton.com )
The bottom line however, is one can have a typographically perfect .pdf _and_ internal tagging which allows it to be re-flowed, so .pdf is the only format offering the best of both worlds.
It's really remarkable that people choose to dismiss .pdfs as ebooks since they aren't reflowable, when pages as such are a fundamental aspect of the definition of a book, ``a written or printed work consisting of _pages_ glued or sewn together along one side and bound in covers.''
Perhaps we should create a new term which specifically encompasses ebooks which are reflowable w/ no fixed format of pages --- how does ``eScroll'' sound?
William