Google Tech TalksJune 21, 2007ABSTRACTWho you are matters, but maybe less than you think. Dunbar and his critics have pointed out only 150 people matter at most to anyone, at any point. Yet we focus on people all the time: Google makes use of this temporary focus in the pagerank algorithm. Social networking sites offer a domain specific set of links and metadata, which allow reliable discovery and tracking tools to be created, e.g. flickr pictures of snow.Based on scientific communities, this talk will explore how people can act as navigational tools to allow interdisciplinary navigation, signposting the way from astro-physics to xeno-biology. We are comfortable with tags as navigational...

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