A well-developed internal linking structure plays a significant role in how Googlebot understands the value and relevance of your pages and their mutual relationship.
However, as an SEO you have to be attentive in making sure that link juice is not wasted. For example, it happens in case if you have links, located on indexable pages, which lead to pages blocked in robots.txt, or to the pages with 404 Http status code.
In this video we show you how to find these pages in a few clicks.
More videos from JetOctopus are here.