In recent days I told you about Hot Prints (here), where you can get 1 totally FREE photo book a month. Then there's Arts Cow, where you can get eight free books (1,200 prints, and a host of other freebies).
Today Vista Print is offering free 5x7 flip book (value $10). You can choose from 12 designs, and books include 10 pages with one picture per page.
You do still need to pay shipping and processing (about $6), so it's not quite as good a deal as some of the other offers out there. But it's still worth checking out.