One of the major statistics for most bloggers is the number of subscribers they have, whether via RSS or email.

In some ways, this is even more important than the number of unique visitors to the site. Getting a lot of visitors but not many subscribers means the people coming to your site aren't being grabbed by your writing.

Fewer visitors but a higher percentage of subscribers means that you've struck a chord with them and they want to read more of what you have to say.

If getting more subscribers is your goal, go and read this post on the Copyblogger website:

How To Increase Your Blog Subscription Rate by 254%

There are some excellent points in that post, and even if it doesn't give you the same 254% increase that they saw, I suspect it will improve your results nonetheless.