A blog is a frequently updated web log of opinions, information, industry news and comments. Bloggers include text, images and videos in their blog posts and often have comment functionality so that people can leave messages about their articles. Blogging began as an online personal diary for some users but has now been incorporated into most major websites. Blogs play an important part in the overall SEO value of a website if they are constructed carefully. The blog post should be about the business area in which you are trying to promote. By using strong titles and linking from keywords through the articles, you can help the overall SEO value of your website. 

If your blog posts get recognized over time as having authority, websites will begin to link and reference your articles. This is what you should be aiming for, engaging blogs that will draw traffic to your website and backlinks from external websites.  Adding comment and sharing functionality will increase the interactive element to your blog and increase the chances of a successful blog.