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Table 1 Classification of first 20 results based on Internet searches for "water fluoridation" and "water fluoridation dangers" using five major search engines

From: When public action undermines public health: a critical examination of antifluoridationist literature

  "water fluoridation" "water fluoridation dangers"
Search engine For Against Reviews Other For Against Reviews Other
Google 7 9 3 1 0 20 0 0
Yahoo 5 11 1 3 0 19 0 1
MSN 8 10 1 1 1 18 0 1
AOL 6 9 3 2 0 20 0 0
Ask 3 16 1 0 0 20 0 0
  1. Note: Search conducted on 10 April 2006, from Australia. Listed search engines account for 90.3% of all US Internet searches (AC Nielson, 2005)