Dimitrov, Stefan, Faiyaz Zamal, Andrew Piper, and Derek Ruths. “Goodreads Versus Amazon: The Effect of Decoupling Book Reviewing And Book Selling”. Proceedings of the International AAAI Conference on Web and Social Media 9, no. 1 (August 3, 2021): 602–605. Accessed May 12, 2026. https://ojs.aaai.org/index.php/ICWSM/article/view/14662.