“…1 Although not nearly as prevalent as traditional sources of data, opensource data have been increasingly used in scholarly research published in peer-reviewed journals. Examples include topics such as corporate crime (Steffensmeier, Schwartz, & Roche, 2013), serial killers (Allely, Minnis, Thompson, Wilson, & Gillberg, 2014;Beard, Hunter, Kern, & Kiley, 2014), and terrorism and extremism (see, for example, Chermak & Gruenewald, 2006;Cothren, Smith, Roberts, & Damphousse, 2008;Dugan, LaFree, & Piquero, 2005;Gruenewald, Chermak, & Freilich, 2012;Gruenewald & Pridemore, 2012;LaFree, Dugan, & Korte, 2009;LaFree, Dugan, Xie, & Singh, 2012;Sageman, 2004). Considering the increasing use of these data sources in social science research, it is curious that open-source data have yet to be systematically discussed, critiqued, or evaluated as a tool for studying crime.…”