Usenet Arbitron Results

Regional and Local statistics have been segregated from the main lists because of sampling bias errors that inflate their estimated readerships by orders of magnitude.

• The assumptions behind these numbers
• Top 40 Newsgroups by number of readers
• Top 40 Newsgroups by number of megabytes posted
• Top 40 Newsgroups by number of messages posted
• Top 40 Newsgroups by cost per reader
• Top 40 Newsgroups by crossposting percentage
• Complete stats for all groups in Brian Reid's report
  except regional/local groups [225K]
• Complete stats for all regional/local newsgroups