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.
For Business Blogs, include product messages in your blog posts clubbed with engaging content .This increases your social shares.
Image speak - A lot of bloggers tend to ignore this, but the images on your blog speak a lot for what you write. Use good quality images and make sure they express your written stuff in utmost simplicity yet precision.