You can't talk about Internet without talking about how fast it grows. This is my cursory graph. I asked myself "When does it crossover the number of people in the world"? My wife who was a geographer, said "I can't even think about that depressing question". So I went to Yahoo and typed "World population" and read an article. It wasn't so depressing .
There are 5.5 billion, and it's only growing at 1.6 per cent per year. The number of Internet users cross over the world population in 2003 in this extrapolation.