Most fanfic crit I have read has been evo-psych or po-mo, the former simplistic, the latter evasive of meaning. A quick glance through tells me the written style of this is neither. It is literate, clear, but assumes the reader is comfortable with complex sentences, paragraphs and ideas. It is informative - of opinions, terminology, URLs, and quality issues.
True to its title, the book draws on the thoughts of the community rather than imposing a single thought onto them. I can see the names of many of my friends in there, but also many people I don't know. I think this a book which would appeal to readers outside of the circle that the author draws on, and outside of the particular fandoms that she describes. Hopefully it will serve as an envoy between the literary and fanfictional worlds.
These are early thoughts, as I haven't read this methodically yet.