I'd give it 5 stars, but the fact that this is kind of a pain to read on anything other than a full sized screen is a downer. Printing is also a problem as there's no practical option for printing without graphics (And you'll spend more than the cost of the book to print yourself). This is b/c they elected to use some text as white on black, but the black is an image itself. Dropping images means the white on black text is white on white. Likewise, reading on a 13" laptop is a bit cumbersome as well, let alone a netbook or other small form factor machine.
I hope that in the future, we'll see properly layered PDFs or "Suitable for printing" pdfs from FFG. IMO their content is generally superior to some of the other marquee publishers... each page in their supplements practically drips adventure.
As in-print books, FFG's doing a pretty good job (albeit expensive). Too bad they seem to not understand digital media as yet.
[4 of 5 Stars!]