This chapter looks into how big data and data science methods can be used to support law and policy research with empirical evidence on digital media production and consumption. To this end we analyze two cases. The simple case concerns the automatic scraping of news media websites to gather data on what is being published by news organizations. The complex case is about Robin, a research infrastructure which allows volunteers to donate their web browsing data stream so the process of personalized communications online can be studied. We discuss the issues researchers need to consider during the planning, data collection, and analysis phases of big data based research. We conclude that despite the limitations, difficulties and well-justifie...