I still do not understand what is the significance of blogging or why and what I am doing here.

It might be like my first e-mail Id. When I got my first e-mail Id, I did not know what to do with it. But I created because everyone was doing it, more than that it was cost effective to send CVs by e-mail than snail mail(saving Rs. 3/- per CV was too much saving that time and I think today also).
The best part is that I did not open my first e-mail Id, actually Mathur created it and told me about the e-mail Id and password for I did not have access to net :-O .

And I found that there are lot more people who are in the same state, what to do with that, even people who have already blogs.
It should be public or private or should be accessible by only few invites is another question.

Now after so much brainstorming and after going through one mistake I learn that blog should be public and always keep this thing in mind.
Some people cant take the truth, you say it at their face or you write it in blog. So its of no use, if you want to communicate something through your blog.
But yes I think its good medium to tell others what you are and what you think.

But be careful, writing might not be real mirror of person's personality.
So if blog is good to introduce yourself in this wide wide world. It could be also be dangerous as blogger may not be putting his own thoughts.

I think it is subject to the other person how he wants to take the blog.
As I am new to this blog, I think but still somehow blog shows your personality but their might be blogs which just want to show their personality like models ;-)