serving the Collective Expressions of the Human Consciences, 16th International World Wide Web Conference (WWW2007) Workshop on Query Log Analysis: Social and Technical Challenges. Banff, Canada. 8-12 May. Paper: http://www2007.org/workshops/paper 58.pdf Slides: http://querylogs2007.webir.org/slides/JimJansenQL2007.pdf Janse