Those interested in the "headier" anthropological and theological questions/perspectives on the subject will likely be disappointed by the book. There's plenty of sociological data but I for one am more interested in the religious, cultural, and theological themes that surround the alleged experience of and apparent interest in the "paranormal." On that front, Kripal's aforementioned Authors of the Impossible does a better job, though it is not at all comprehensive and it suffers the limitations of being written directly for a popular audience. The strength of the book is its survey data. If trusted, the data indicate that no religious denomination in the United States is not without a notably percentage of adherents who believe in paranormal phenomenon that, likely, are outside of or contradict the doctrine of the denomination. If the category of mainline religious observance rises (as opposed to rigid religious observance, then were are likely to see an increase in the percentage of religious adherents who's conception of reality and maybe even the divine is in part shaped by belief in phenomenon outside the purview of their denomination.
In the end, Paranormal America is another baby step in analyzing the post-twentieth century, post-industrial age, spirituality stew in which we find ourselves simmering.