The book is not a blog; it is not published step by step, but as a whole, at the same time.
Therefore, I suggest removing comments like "Continued in next post" or "Followup to"; especially if it is a reference to the very next or very previous chapter, but also if it is two chapters behind. Specifically, chapters 3 and 4, 11 and 13, 20 and 22, 22 and 23, 28 and 29, 31 and 32, 31+32 and 34, 41 and 42, 49 and 50, 54 and 55, 56 and 57, 57 and 58, 59 and 60, 60 and 61, 62 and 63, 63 and 64, 64 and 65, 64 and 66... okay, I guess you get the idea. In a book, the next chapter being a followup to the previous chapter is pretty much expected.
On the other hand, chapters 16, 18, 28... are followups to chapters not included in the book. Maybe instead of "followup" it would be better to use some other words to express that this chapter is related to some online article.
Summary: the book is a different medium, so I suggest rewriting the standard "followup" notice, depending on situation:
MIRI is gathering a bunch of Eliezer’s writings into a nicely-edited ebook, currently titled The Hard Part is Actually Changing Your Mind. This book will ultimately be released in various digital formats (Kindle MOBI, EPUB, and PDF). Much of the initial work for this project is complete. What we need now are volunteers to review the book's chapters to:
This project has been added to Youtopia, MIRI’s volunteer system. (Click “Register as a Volunteer” here to sign up. Already signed up? Go here.)
LW Karma Bonus
For this special project, every point earned in Youtopia will also earn you 3 karma on LW!
Points are awarded based on the amount of time spent proofreading the book. For example, an hour of work logged in Youtopia earns you 10 points, which will also get you 30 LW karma. Karma is awarded by admins in a publicly-accountable way: all manual karma additions are listed here.
Questions about this project can be directed to alexv@intelligence.org or in the comments.