ok maybe 1000 000
How ever many mexicans you can fit in to the ring.
There are lots of internet users in this world. I am sure there are also lots of people who participate in blogs.
37 million
I think almost everybody
I think that it is over 100 pepole acrose the world
hundreds of thousands of people compete every year
Yes, as many people as you want can participate!
Depends on how many people in that school!
14000
32
5
There are many free competitions that people can participate in. Many people hold 5k road races where one can choose to donate, but can still compete in the competition for free.