The term first coined at a conference brainstorming session between O'Reilly Media and MediaLive International, which also spawned the Web 2.0 Conference.
P. Pirolli, E. Wollny, and B. Suh. CHI '09: Proceedings of the 27th international conference on Human factors in computing systems, page 1505--1508. New York, NY, USA, ACM, (2009)
D. Chau, B. Myers, and A. Faulring. CHI '08: Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, page 999--1008. 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)