There are lots of internet users in this world. I am sure there are also lots of people who participate in blogs.
Blogs are personal logs or diaries. Of which there are many millions. Sites such as those suggested are not blogs in themselves but platforms for the blogs. Many people create their own platforms on their own sites.
in the world there are more than 1 Billion + users and viewers on blogs
Yes, as many people as you want can participate!
Wikipedia is full of facts written by many many many users. Blogs are written by 1-5 people that the author of the post gave permission to do. Blogs you can trust because Wikipedia may have information that may not be true, blogs might, but it is a lower chance.
Depends on how many people in that school!
Many people come across blogs via search engines like Google. Other ways to learn about blogs are social networks and links from other blogs.
14000
There are many sites that offer blogs for free. People can just browse the blogs in the category of their choice and read it. They can also comment on it and give their opinions. Some of the examples of sites that has blogs listed on them areBloggerWordpressHubpagesTechnoratiTumblrSome sites may require the reader to first create an user account with it before granting access to its blogs.
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.
Some cool general blogs you can start reading include Goodreads Blog and the Huffington Post blogs. There are many blogs on many topics, so read the blogs that interest you.
800
They say about 1 in 100.