Currently, I also use the THiNC Books.
I have been testing them for some time as a means of making literature more fun for SL. However, I have been unable to create individual chapters, thus limiting my use of them.
If anyone is interested in this, I am giving away a copy of Edgar Allen Poe's 'The Raven' on a THiNC Book. I have a couple of others, which I am currently selling, but they arent quite the quality I had hoped for originally, and I am considering scrapping the whole idea for the time being.
(not the THiNC Books themselves, the quality of my personal usage of the Books)
On the flipside, the THiNC Books are very nicely done, and in combination with a Printing Press, and a good deal of creativity on the creator's part, makes for a very strong product.
I would love to see what others have done with the THiNC Books.
Oh and btw, I havent been lurking the boards for the past month... I wasnt able to use my Internet =(
But now Im back, bringing sorrow and woe to all! (as fortold by The Prophecy.)