Over at Accelerating Future, Michael Annisimov has a pointer to a review of Moral Machines by Wallach and Allen. ย He makes one major factual mistake, though: ย MM is not the “first published book exclusively focused on Friendly AI” as he calls it.

The first book dealing exclusively with these issues was my Beyond AI, which came out a couple of years before MM. ย (2007, Prometheus)
The book was an outgrowth of my original essay on the subject, Ethics for Machines, originally published in 2000 (on the web, and given out on paper at a Foresight Conference). ย In an odd historical coincidence, Nanodot was just starting up and the first poll it ran was about whether I should expand the essay into a book.