Smith has delivered a good primer with his treatment of Postmodernism as (1) he "unpacks it" (i.e., provides guiding explanations, etc.) and (2) shows why rather than being the "bogeyman" of the Church, Postmodernism may be of profit in its ability to call the Church to return to what truly made her unique. Smith's picture of what a church could be (144-146) so resonates "community" as to make us ache as we perceive the lack of community within much of Western Christianity.
On a personal note - this is one book that (1) engaged my interest the entire time, (2) in which I did not sense the author repeating himself simply to make the book a "bit longer", and (3) has been cited often and highlighted even more.
The book is an excellent book on the Christian adaptation of post-modernism. Smith effectively decodes the sometimes difficult concepts of the likes of Foucault and Derrida (if you've read their work it is rather difficult to parse) and shows how a fresh appropriation of postmodern themes, already simmering in Western culture, can and should be used in the Christian life. This is not unlike Justin Martyr or any of the early apologists applying Greek thought into a defense and appropriation of Christianity in their time.