Some day some clever eBook maker will market an A4-sized reader that displays in color. Then those of us that use PDFs a lot in our work (e.g. engineers) can have many manuals and specs open, and can hop back and forth between them using easy bookmarks.
This device should be light and have a support leg in the back that can be folded out to stand it in a semi-erect position. It should be fairly invulnerable to soldering irons.
Then we can have all of our favorite magazines in full-size color too! Then PDFs will be the most beloved of eBook formats.
Oh. And venting is only human, and we are all human here except for one or two forum bots.