Friends and family often comment on how nice it would be to have a blog big enough to fight back
against bullies like spammers, scammers, shady businesses and all other companies and people who deserve to be called out for their bad behavior.
First, it's a lot of work. I think the main factor for the success of anything is the work you put into it. A blog is just a public diary--you still have to write!
Second, the real power of the blog to me is simply the power of search engines like Google, Bing, etc., to index all these blogs. Why should a huge corporation tremble in fear for a small fish like me calling out their behavior?
Because a blog post is a public, permanent record of their behavior. You may say "I'm too little to change anything" because your blog only has 2 readers. But a billion people could find what you wrote if they searched for it hard enough, even without any type of promotion of your blog. If you write something, and it doesn't suck, and people are looking for what you wrote, then they will find your blog.
So, the power of blogging is really the power of Google. And like other aspects of life, it's more what you do with it than how large you are!