<!doctype html public «-//w3c//dtd html 4.0 transitional//en»> http-equiv=content-type> Written by leading scholars investigating the impact of Web 2.0., this collected volume gathers a broad spectrum of social science and information science articles about Facebook. It looks into facets of users, such as age, sex, and culture, and into facets of use, e.g. privacy behavior after the Snowden affair, unfriending on Facebook, or Facebook addiction, as well as into quality perceptions.