Wolfgang wrote:
"Ken Fortenberry" wrote:
Wolfgang wrote:
I really don't know how it was derived but if you Google up
usenet arbitron readership you'll get more info than you want
to read.

I don't want more information than I want to read. How's about you just
summarize it for all of us.

A survey of the readership comprising a significant sample
size is conducted to determine total readership. The number
of unique posters over a 14 day period is counted to determine
regular posters. The number of total readers is usually about
ten times the number of regular posters for most newsgroups.
It's not exact, it's just a guess, but it was always close
enough for government work.

--
Ken Fortenberry