This is just an idea for an application that can be useful to you and me. Often, downloading a book in PDF format you decide to read it, say 2-3 pages a day. And, of course, then all this is easily forgotten, even easier than if it were paper. (If you have no problems with willpower, congratulations, you can stop reading)
Personally, I often read my reader. I consider it my duty to bring the number of unread entries to 0.
The idea is to make a simple application on appspot.com (for example), which will divide the uploaded file (PDF / TXT) into pieces - paragraphs, then the user himself indicates how many chapters he needs per day, and other settings. Then he gets a link to RSS, by which he can read his book. ')
I did not find ready-made implementations, but personally I really like the idea.