Looks really nice, although ... For as good as the TOC and layout is, there's always something I miss when I read books from a website. I miss the spatial cont

Looks really nice, although ... For as good as the TOC and layout is, there's always something I miss when I read books from a website. I miss the spatial context: how much material I already covered? How much is left? I like the linearity of regular books (that includes PDFs). If the book is a website the next best thing for me is when the whole thing is just a single page. Worst thing are epubs :-p (hate the way the layout works with those and how slow epub readers tend to be). ps. I saw I can buy a PDF of this site, but just commenting in general.