mahout in action

[Tamas Jambor]

I am looking into the distributed part of the recommendation. Sean 
mentioned that there is a book Mahout in Action coming out. I had a look 
at the table of content.
I've been working with recommended systems (and mahout) for quite a long 
time now, I assume that chapter 2-5 wouldn't really give me anything 
new, so I'd be only interested in reading chapter 6. do you think it is 
worth buying the book only for chapter 6?

Tamas