Reeves, Byron, Simon Roy, Brian Gorman, and Teresa Morley. “A Marketplace for Attention: Responses to a Synthetic Currency Used to Signal Information Importance in E-Mail”. First Monday 13, no. 5 (April 21, 2008). Accessed April 16, 2024. https://firstmonday.org/ojs/index.php/fm/article/view/2100.