A review by jnieto
Everybody Lies: What the Internet Can Tell Us about who We Really are by Alex Tri Kantjono Widodo, Seth Stephens-Davidowitz

4.0

A good (and funny) overview of where so much data can be of use. For example, data can allow social sciences to become scientific ;-)
Good explanation of experiments that can prove causality (randomized experiments) and why many dimensions and no clear reasoning can find nonsensical correlations.
My advice: read it until the conclusion. ;-)