Thanks Mike,
Yeah, I haven't read the book. I just saw that recently you released the book for free. I'll take a look at it when I get a moment. I'm very interested. When I had written the section on your kit, the book wasn't available. (I'll make a note in the article.)
I made an extra effort to point out that a compatible board is just as good as an official one. I want beginners to be clear that they don't have to go with the official board. I think it's great you went with a Freeduino. It's just as good, shows the spirit of the whole thing, and brings down costs, which is pretty great for everyone.