Think of the biggest number you can. Add ten more to that. It's huge to the power of 10. There were 20,340,000,000 web pages indexed of November 2009. There's only more now.
The most probable answer is thousands with more new ones starting up everyday.
It is so easy to set one up and yet so difficult to make one work. Only the very largest and well established last...
Japan does have the Internet and there are currently about 14 million people in Japan with broadband access. In 2000, approximately 47 million people used the Internet.