Book on marketing post production

Hi there,
I have searched for this so my apologies if I missed it.
I read a couple of months ago about a well known post production owner who had written a book (or an e-book) on how to market your post production facility. He had some great ideas for using blogs etc. I thought I'd bookmarked it but can't find it.
I'd be very grateful if someone could point me to the book or URL if they know which book I am referring to.
Thanks in advance as always,
-Ross