rnal of the American Society for Information Science and Technology. 60(11), 2169-2188. Recognized as one of the top 10 most highly cited papers in JASIST published since 2001 http://www.asis.org/Bulletin/Aug-12/AugSep12 Bar-Ilan.html Jansen, B.J., Booth, D. and Smith, B. (2009) Using the taxonomy of