IP: IMPORTANT Who has the best information about the number of Worldwide Internet users?

[David Farber <dave@farber.net>]

A good friend has a bet  that there WEREN'T 1 billion users on the web as 
of January 1, 2002.

The other party claims that the counting is bad and that there are many 
school children that are not counted.

Can you help me and my friend

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