I had a friend who did his whole dissertation on how children learn the word "with". Pretty cool, but kinda funny that it was all on this one word.
I don't know about it as an actual book. Seems better as an archive on the web than a book that you pick up and read...especially as it is more about a search for the truth than any one point. I would like to edit the format though before it is turned into a PDF as it seems to need cleanup with the scripts and formatting, if it is saved as html or whatnot (I'm not sure what format it was saved in).
It's a crying shame though if the original thread was corrupted. One of my favorite threads was corrupted once and I hated that I lost all the research and writing I did.