Apart from the specific informations that are enclosed within this book related to running experiments, and Big Data, what caught my attention in addition to the infinite possibilities of re-purposing data, was ethics in digital social research (Computational Social Science).
There's a clear horizon where “Ethics will move from a peripheral concern to a central concern and therefore will become a topic of research.”... and the author formulated a preliminary guide for that purpose : “Four principles that can guide researchers facing ethical uncertainty are: Respect for Persons, Beneficence, Justice, and Respect for Law and Public Interest.”
And while you might think that the main sources of Big Data are online, it seems that “Corporate big data sources are about more than just online behaviour + Data generated by government administrative records, tax records, school records, and vital statistics records.”...
One other important feature about CSS, is to be able to come up with a good research design :
“The best way to create this powerful hybrid is not to focus on abstract social theory or fancy machine learning. The best place to start is research design. If you think of social research as the process of asking and answering questions about human behavior, then research design is the connective tissue; research design links questions and answers. Getting this connection right is the key to producing convincing research.”