ence on Human Factors in Computing Systems (SIGCHI ), Workshop on Exploratory Search Interfaces. San Jose, California. 28 April - 3 May. Spink, A., Alvarado-Albertorio, F., and Jansen, B.J. (2007) Web Search Behavior: What is Normative?, Society of Australasian Social Psychologists (SASP) Conference. Brisbane, Aus