This document summarizes a research project on social media news audiences and the quantified journalist. The project examines how journalists and audiences co-create news on social media platforms like Twitter. It analyzes what news content is shared on social media, which sources are most prominent, and the roles of journalists and audiences in shaping public discussions. The researchers will collect data from sources like Twitter, Facebook, and news site analytics to understand news sharing trends and how overlapping publics form and interact. The goal is to develop a new model of the Australian online public sphere and understand how news consumption and debate unfold over time.