Tags: Use of relevant tags is important from the SEO perspective. It helps the search engine track your post based on the tags you use.
Acknowledge and appreciate your readers especially regular readers by replying to comments and visiting their work.
Use technology - Social plugins and SEO tools are a great thing to market your blog or a blog post. If you do not know about it, then learn it. It helps you reach out your audience in a better way and also improves the ranking of your blog.