Internal linking is the process of linking to other pages on your website from within your content. It is an important part of SEO because it helps Google understand the structure of your website and the relationships between different pages. LinkWhisper is a WordPress plugin that makes it easy to add internal links to your content and to manage your internal linking structure.
Most site owners know how important link building is for SEO and the future success of their sites. However, this does not mean they know how to actually build really good links. There are many mistakes that are made.