Chris Spooner at blog.spoongraphics and Line25 has written a fantastic article giving visitors insight in to his year with his new (1yr old) blog Line25.
In the article he gives insight into how the blog has grown and developed over the year with stats on RSS feeds, visitor sources and which articles have proved the most popular.
Also provided is a history of the thought processes and ideas that have developed the blog in what it is today. This is especially interesting, as it shows with some clever thinking and a determined purpose, a blog can become an excellent tool for promotion.
It's a great example of how a blog can develop into a successful site.