For book forty of 2015, I enjoyed the book Dataclysm.
I found the most interesting points of this book to be the data sets the author used from OkCupid.
The book brings up some very interesting points about the building data trend, the number of likes and shares of a website or posting, and the demographic data sets and how they break out in different sexes and races in the OkCupid data sets, is extremely interesting.
This was a very interesting and revealing read into what specific data sets can be used for and reveal.
Definitely a recommended read!