How does commenting on blogs help us?

I have worked on my book project in class today. I have answered and written about the question "How does commenting on blogs help us? Can we learn from others this way?

Here is a typical "blog comment window"

 

Here is the start of what I wrote today:        

What would you have learned if you wrote on your blog, but no one commented? Or if you handed in an English paper, but no one would read it or give you feedback. Would you improve your English language, gotten tips, or more information? No, you would not.
 

The fact that you can comment on a blog is pretty much like getting feedback on a paper you have written. Other random people with perhaps other experiences can give their own opinions and information so you probably can see things from another angle. Also, you can get tips and feedback on what you write. When other people comment about their opinions or about what you can improve, you can learn something from them. I really think so. Imagine that I sit here in Norway and that some people in Africa can read and comment on this. The world has become incredible small.  I believe this is quite amazing.