My motley collection of thoughts upon reading this (please note that, wherever I say "you" or "your" in this post, I'm referring to the whole committee that is working on this ebook, not to you, lukeprog, in particular):

• It's a difficult book to name, chiefly because the sequences themselves don't really have a narrow common thread; eliminating bias and making use of scientific advances don't qualify as narrow enough, many others are trying to do that these days. (But then again, I didn't read them in an orderly fashion, or enough times, to be able to identify the common thread if there is one more specific than that. If there is one, by all means, play on that.)

• Absolutely no mention of anything such as The Less Wrong Sequences, 2006-2009. This belongs in a blurb or in an introduction to the book. You probably think that, by using that in a title, you're telling readers the following: the contents of this book were originally published as sequences of blog posts on the website lesswrong.com, from 2006 to 2009. But you're not. This information can be conveyed in a sentence such as that one, but it cannot be conveyed in a short title, given that readers are unfamiliar with the terms. There isn't really a way for them to guess from a quick glance at the title that "Less Wrong" means "the website "LessWrong.com" or that "the Sequences" mean "several series of blog posts around which the LessWrong community was formed", or what all of that has to do with them.

• And even so -- is that the first thing you wish to tell your readers? What happened to the contents of the book before they were made into a book...? And in a form which is basically incomprehensible to them? While giving little insight into the content itself? And do you really, honestly think that you're not doing the material a disservice by telling the readers that it was first published on some guy's blog, before they know anything else about the book (i.e. how it distinguishes itself from ordinary blog posts)? If the first association is with something as low-status as a blog, then that's gonna be the lowest common denominator -- you're gonna have to work up from that, which is harder than working up from the expectation of an average pop-sci book. (Thankfully for you, though, the readers won't be able to draw those inferences; see the paragraph above.)

• The rest of the suggestions -- The Craft of Rationality, The Art of Rationality, Becoming Less Wrong -- they're not technically bad, but... they're -- they're weak. They're not distinguishable. The authors out there that are trying to establish themselves as the masters of the "art/craft" of something are a dime a dozen. Sure, probably LWers are probably the most eager bunch to claim "the art of rationality" for themselves, or at least this is what a quick internet search told me, but the connection isn't immediately established in the minds of the readers.

• Careful about any unflattering allusions to the reader's intelligence. They can be taken well if presented in a humorous/witty form, but you have to make believable promises that the book will help readers overcome them. Also (and this is directed mainly towards the rest of the commenters), everything that suggests that the book is meant to drill the "correct" ideas into your head, rather than teach you how to develop good thinking practices on your own, is a no-no.

• How come Eliezer hasn't come up with a good, catchy title yet? I've just gone over the titles of the blog posts included in the sequences, and those ones are very good, very appropriate as chapter/subchapter titles. He's good at this titling business. Surely he could think up something witty for the one title to rule them all?

• No suggestions from me just yet. I need to think this through better.