The Good: this is an original digital copy so it is perfectly clean and searchable. It is one of the few PDF books that is not locked, so you can add your own bookmarks if you like. So as far as Drivethrus responsibility... it is perfect.
The Bad: this book is junk. The information in it is redundant - covered in the 2nd ed core book. The book is filled with setting "flare" which amounts to random ramblings about tedious aspects of the universe. It is not useless, but if you have the time to read this book... just re-read the core book and you'll be better off.
Don't purchase this book unless you are just a Fading Suns collector. In which case, I think there is a nice bundle that Drivethru offers which has this one and several of the other players suppliments.
[2 of 5 Stars!]