Great book. It has broken down the role of game and the core of RPGs in a way that I have not read before. I have read a lot of GM tips good and listened to numberous podcasts on the subject. This is the most consice and well thought out guide or content by far.
I downloaded it as a $0.00 donation. I am not going back and giving $10. Great job.
[5 of 5 Stars!]