An authoritative introduction to pre-internet computerized social networks. Well cited, giving the interested reader many jumping off points. The writing style is very very dry; I felt it became more and more essay format as the book progressed, until in the penultimate chapter the writer was using the essay format: introducing what they intended to say, elucidating each point, and then summarizing the points that were made.

Birthday gift. Finished on flight from DIA-MSP.