For each "Pillar" they write why this fact makes zombie books so appealing. Then they offer a reading suggestion, one with zombies and one with the same appeal but no zombies, for each "Pillar." Now these are all YA books and I tend to focus on adult titles, but their reasoning and descriptions are spot on. This can be applied across the board to any zombie book.
I am a Librarian [MLIS] in Illinois specializing in serving leisure readers ages 13 and up. I train library staff all over the world on how to match books with readers through their local public library. I am the author of The Readers’ Advisory Guide to Horror, 2d edition (ALA Editions, 2012). I also write content for EBSCO's NoveList database, reviews for Booklist, am a member of the Adult Reading Round Table Steering Committee, a 5 term Trustee for my local library, and am a proud member of The Horror Writers' Association. Check out the side bar for links to the groups and organizations with which I am affiliated.