Anyone who is interested in creating a blog should really take the time to familiarize him- or herself with Technorati, which is sort of the Google of blogs. It's not just a search engine for blogs but a way to track them: how your blog ranks among the most popular blogs in your category, who's been linking to your blog, all kinds of cool stuff like that.
It's also a way to keep up on what's percolating in the blogosphere. Technorati tracks the stories that have been appearing on every type of blog - corporate, personal, professional - so you can keep apprised on what's happening. You can also set up an account for yourself there to follow the blogs you're interested in. It's definitely a source worth checking out.