One of the best narrative driven games I've ever played. I greatly enjoy the message of desperation and poverty built into every aspect of this game. The writers are awesome too.
This background book really works for any magical setting. I've made NPC's and unique weapons using this ruleset and think its a wonderful addition to the table.
The content in this book is varied, silly, and a hit at my table. Whenever character creations comes up, they always take a peak in this book before deciding to take the plunge.