A common misconception about SEO is that it's a one and done practice. If you read something interesting on a blog, you should comment. Especially when a post is about something you may have written about yourself as well. In your comment, you can share your view on the matter …

To gain visibility across search engines (think 'universal' or blended search), as well as relevant blogs, forums, online media and social networks, whilst being compelling enough, where relevant, to be shared by the target audience. Each robots.txt file only applies to URLs with the same protocol, subdomain, domain and …