GameDev.net has reviewed The Essential Guide To Flash games, and has given it 4 Gs! 

Here is a good quote:

“The level of the book starts off quite simply. While it might help to
know a bit of computer programming, knowledge of ActionScript or the
“Flash way of doing things” isn’t important. If you have a little bit of
programming, the book will move at a reasonable pace to teach you the
rest.”

While the review has a few inaccuracies (there are 10 games, not 6, and while we don’t create and graphics for title screens we certainly create them in our framework and we also show you how to create a high score table with Mochi services), it’s still nice to see a review in the wild.

You can read the review here:
http://www.gamedev.net/columns/books/bookdetails.asp?productid=778