About the Authors

Matthew J. Salganik

Affiliation Department of Sociology, Center for Information Technology Policy, and Office of Population Research, Princeton University, Princeton, NJ, USA

Karen E. C. Levy

Affiliation Information Law Institute and Department of Media, Culture, and Communication, New York University, New York, NY, USA and Data & Society Research Institute, New York, NY, USA

Competing Interests

This research was funded, in part, by a grant from Google, and some of this research was carried out while MJS was an employee of Microsoft Research. This does not alter the authors’ adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: MJS KECL. Performed the experiments: MJS KECL. Analyzed the data: MJS KECL. Wrote the paper: MJS KECL.