In her new book Race After Technology: Abolitionist Tools for the New Jim Code, Ruha Benjamin breaks down the "New Jim Code," technology design that promises a utopian future but serves racial hierarchies and racial bias. When people change how they speak or act in order to conform to dominant norms, we call it "code-switching." And, like other types of codes, the practice of code-switching is power-laden. Justine Cassell, a professor at Carnegie Mellon's Human-Computer Interaction Institute, creates educational programs for children and found that avatars using African American Vernacular English lead Black children "to achieve better results in teaching scientific concepts than when the computer spoke in standard English." But when it came to tutoring the children for class presentations, she explained that, "We wanted it [the avatar] to practice with them in'proper English.' Standard American English is still the code of power, so we needed to develop an agent that would train them in code-switching."

This study investigates the public health intelligence utility of Yik Yak, a social media platform that allows users to anonymously post and view messages within precise geographic locations. Our dataset contains 122,179 “yaks” collected from 120 college campuses across the United States during 2015. We first present an exploratory analysis of the topics commonly discussed in Yik Yak, clarifying the health issues for which this may serve as a source of information. We then present an in-depth content analysis of data describing substance use, an important public health issue that is not often discussed in public social media, but commonly discussed on Yik Yak under the cloak of anonymity.