Social networking tremendously expands the audience you can connect with. If you do not use social media and social networks to promote your blog posts and blog, then you will find building a growing readership is more difficult as the audience you reach will be limited. http://onecoolsitebloggingtips.com/2010/07/13/wordpress-com-in-house-blog-promotion/
I'm wondering how many people who post to this forum and to the Showcase Forum regularly are actually promoting their blogs beyond the wordpress.com community?