A big reason why I keep this blog (and why I post so many photos) is so that we have a family journal to look back through, talk and laugh about, get ideas from, and reflect on, as well as a family photo album created without the work of having to print photos and put them in albums. Now we have not only a digital version of this family album, but a real-life print one too. The book is far from perfect (next time I might spend more time designing it) but it was quick and easy: I just put in my URL and it spit me out a book which I received a week or two later, simple as that. It is pretty great to have it.
By the way, I used Blog2Print for this, although I am curious to know if others have done this and how you did it.