The term first coined at a conference brainstorming session between O'Reilly Media and MediaLive International, which also spawned the Web 2.0 Conference.
E. Adar, J. Teevan, and S. Dumais. CHI '08: Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, page 1197--1206. New York, NY, USA, ACM, (2008)
G. Duggan, and S. Payne. CHI '08: Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, page 39--48. New York, NY, USA, ACM, (2008)
G. Leshed, T. Velden, O. Rieger, B. Kot, and P. Sengers. CHI '08: Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, page 1675--1684. New York, NY, USA, ACM, (2008)