If you blog, then you should read Chris Brogan's 50 Ways. The link is below for you also.
Blogging is as varied in its applications as using the telephone or taking a picture. The tool doesn’t predict the output. You might be using your blog to post recipes, or to inform the local community about information you find elsewhere on the web. Maybe you’re just trying your hand at writing, and the web is as good a place as any.
If you’re looking to go beyond that, however, you’ll need to take steps to improve your blog from at least five different perspectives. In 50 Ways to Take Your Blog to the Next Level, I wanted to share my thoughts on how you should consider your goal, your design, your content, how you promote it, and the business aspects of your blog. Please add to these ideas in the comments, and let’s grow the list out.