yes, please provide a pdf version (free or paid, doesn't matter for me) ... oftentimes authors will make a kindle version of the book for sale on Amazon and forget to put out a pdf.
I am an author (not of this book) and I very occasionally get an email asking for PDFs. Maybe one in a thousand sales are PDF. Since it doesn't come up that often I've never bothered with setting up a paid system; I just send them a link and ask nicely for a few bucks via PayPal.
Where do most people go to buy PDFs? Is it really a large-enough market to worry about?
Lulu? At least that's the only place I've specifically bought a PDF - then I found out that it's wrapped in some horrible Adobe DRM (if there are any ways to remove this, I'd love to know). I don't begrudge the money, I just wish I could read it in Preview.app rather than Adobe Digital Reader or what ever it's called - it doesn't scroll smoothly, only page wise which is a massive pain when there's lots of diagrams.
Other than that, all the ebooks I've bought from individual storefronts, often from having seen them on HN, have come as a PDF/epub/mobi bundle to work on any device.
Please don't password protect PDFs for books. It makes it a huge pain in the ass to actually read. I'd much rather you do what the Pragmatic Bookshelf does and just embed our name into the PDF.
Don't know, but I find it a great way to read on laptops & desktops. Of course, a nice html would work as well, but that's rare. (also, the pdf reader in KDE remembers what page you're on and lets you annotate etc..)
