At the very least, I'd recommend most bloggers install Google Analytics (which is free), and watch to see where visits originate, which sources drive quality traffic and what others might be saying about you and your content when they link over. If you want to get more advanced, check out this post on 18 Steps to Successful Metrics and Marketing.

I do install Google Analytics code for every client and track the traffic and performance of the website.

hi.
Google analytics is much much better to use.