[bengillies]

I don't think it's fair to say that preserving page structure and formatting is never a good idea. For example, at least one good use for PDFs is sheet music/tabs. Formatting is obviously important here as it tends to lose meaning without it, but equally as important is the page structure and per-page nature of reading vs scrolling. As a (hobbyist) musician, when I'm playing an instrument, I don't have any free hands to scroll with, so it's important to me that I don't have to do it very often.