From: reid@decwrl.dec.com (Brian Reid)
Subject: TOP 40 NEWSGROUPS IN ORDER BY PER-READER COST (AUG 92)
Originator: reid@torrey.pa.dec.com
Keywords: arbitron, statistics
Organization: DEC Network Systems Laboratory, Palo Alto, Calif., USA
Date: Thu, 3 Sep 92 05:09:47 GMT

TOP 40 NEWSGROUPS IN ORDER BY PER-READER COST
A companion posting explains the statistics and the algorithms that produced
them.

        +-- Estimated total number of people who read the group, worldwide.
        |     +-- Actual number of readers in sampled population
        |     |     +-- Propagation: how many sites receive this group at all
        |     |     |      +-- Recent traffic (messages per month)
        |     |     |      |      +-- Recent traffic (kilobytes per month)
        |     |     |      |      |      +-- Crossposting percentage
        |     |     |      |      |      |    +-- Cost ratio: $US/month/rdr
        |     |     |      |      |      |    |      +-- Share: % of newsrders
        |     |     |      |      |      |    |      |   who read this group.
        V     V     V      V      V      V    V      V
   1    140     3    2%  8733 12960.0     0%  6.50   0.0%  ncar.weather
   2    420     9    4%    90  4772.1     0%  1.40   0.0%  de.alt.binaries.sounds
   3  13000   278   43%  2917 11866.5     0%  1.10   0.5%  bionet.molbio.genbank.updates
   4    830    18    9%  1393  3379.4     0%  1.10   0.0%  fj.mail-lists.x-window
   5  38000   819   75%   348 15323.6     1%  0.83   1.5%  comp.binaries.os2
   6 150000  3190   52%  1535 64487.3     7%  0.62   5.9%  alt.binaries.pictures.erotica
   7  30000   645   77%   208  8497.3     0%  0.60   1.2%  comp.binaries.apple2
   8   1900    41    9%   768  3586.1     8%  0.51   0.1%  tor.news.stats
   9  95000  2057   54%   767 31116.3     1%  0.48   3.8%  alt.binaries.pictures.misc
  10  20000   440   66%   701  5160.4     4%  0.47   0.8%  misc.activism.progressive
  11     46     1    0%    55   960.8     0%  0.47   0.0%  ar.info-unix
  12    370     8    9%   190   612.5     0%  0.42   0.0%  fj.mail-lists.parallel
  13     92     2    2%   270   518.6     0%  0.42   0.0%  uiuc.wx-talk
  14  32000   700   68%  2012  6618.4     0%  0.38   1.3%  soc.culture.vietnamese
  15  10000   220   22%  2221  5586.7    64%  0.35   0.4%  alt.politics.bush
  16  48000  1030   74%  4162  8010.8     0%  0.34   1.9%  rec.arts.tv.soaps
  17  38000   829   79%   249  5528.0     0%  0.32   1.5%  comp.mail.maps
  18  34000   727   77%  2381  5140.0    14%  0.32   1.3%  comp.sys.amiga.advocacy
  19  10000   225   49%   695  2348.9     1%  0.32   0.4%  talk.politics.animals
  20  53000  1153   68%  3663  8860.0    23%  0.31   2.1%  talk.abortion
  21     46     1    0%    57   633.1     0%  0.31   0.0%  ar.unix-wizards
  22  13000   279   62%   111  2316.4     5%  0.30   0.5%  soc.veterans
  23    920    20    6%    33  1471.1     6%  0.29   0.0%  fj.binaries.x68000
  24   3100    68   15%  1617  2043.0     0%  0.28   0.1%  k12.chat.senior
  25    420     9    9%   230   450.9     0%  0.28   0.0%  fj.mail-lists.apollo
  26  49000  1050   52%   247  8803.7     3%  0.26   1.9%  alt.binaries.sounds.misc
  27   2500    55    7%    53  2909.1     2%  0.25   0.1%  de.alt.sources.huge.unix
  28   2000    44    8%    35  2073.5     0%  0.25   0.1%  de.comp.sources.unix
  29  16000   354   39%  1381  3669.4     2%  0.24   0.7%  rec.games.frp.misc
  30    280     6    4%   334   580.3    26%  0.24   0.0%  uiuc.general
  31  36000   769   69%  2393  4407.4     1%  0.23   1.4%  rec.sport.football.pro
  32  25000   542   52%   813  4092.9    30%  0.23   1.0%  alt.fan.rush-limbaugh
  33   3900    85    9%    84  3379.6     6%  0.23   0.2%  fj.sources
  34  64000  1376   76%  3963  6667.9     2%  0.22   2.6%  rec.motorcycles
  35  33000   703   56%  2350  4835.6     1%  0.22   1.3%  comp.os.linux
  36   1100    23    5%   664  1553.4     7%  0.22   0.0%  fj.news.policy
  37  59000  1274   46%   255  9934.2     0%  0.21   2.4%  alt.binaries.pictures.tasteless
  38  41000   887   71%  1081  4402.2    73%  0.21   1.6%  soc.culture.turkish
  39  19000   406   60%   639  2388.7     4%  0.21   0.8%  soc.culture.mexican
  40   9400   203   26%  1108  2750.7    19%  0.21   0.4%  soc.culture.tamil
Xref: sparky news.lists:379 news.groups:17560 news.announce.newusers:134 news.announce.newgroups:1076 news.answers:2775