Analytics

This is a part of planning, you should see how many visitors you have and how do they get to your blog etc. I found it very useful (even if I have a little visitors). Increase in your blog traffic means that you are very near to success. There are sites offering statistics for your site, I am using Google Analytics and it is one of the popular ones. You should start an account immediately if you haven't.

There are lot of uses for this. You can see who visit your blog, when do they visit, where do they click, which page do they read etc. My daily traffic is 13 now. It is pretty low, but I am trying to increase it. i think you understood the use, then what are you waiting for, just find one (I recommend google analytics) and sign up.