Volume 14, Number 1 - 5 January 2009

• Social networks that matter: Twitter under the microscope

  Bernardo Huberman, Daniel M Romero, Fang Wu

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• A Grateful Dead analysis: The relationship between concert and listening behavior analysis

  Marko A Rodriguez, Vadas Gintautas, Alberto Pepe

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• Open source collaboration: Two cases in the U.S. public sector

  Michael P. Hamel, Charles M. Schweik

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• Examining social media usage: Technology clusters and social network site membership

  Andrew Schrock

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• Internet security: Who is leaving the ‘virtual door’ open and why?

  Daniel M. Downs, Ilir Ademaj, Amie M Schuck

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• Toward a pervasive communication environment perspective

  Ted M. Coopman

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• Always on: Libraries in a world of permanent connectivity

  Lorcan Dempsey

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Book Reviews

• Review of James Boyle's The public domain: Enclosing the commons of the mind (New Haven: Yale University Press, 2008)

  Edward J Valauskas

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• Review of Walter Alvarez's The mountains of Saint Francis: Discovering the geologic events that shaped our Earth (New York: Norton, 2009)

  Edward J Valauskas

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• Review of Sherry Turkle's The inner history of devices (Cambridge, Mass.: MIT Press, 2008)

  Edward J Valauskas

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