The higher the number of relevant sites linking to you, the higher your rankings will be, right? What happens if a non-relevant site keeps linking to you? Or worse, you get a backlink from an adult or gambling site?
These irrelevant links can be hurting your rankings. For this reason, Google released the Disavow Tool as a way for you to tell Google to not count specific backlinks.
The Disavow Tool allows you to ask Google to remove certain URLs or domains as a ranking factor in the indexing of your site. You do this by creating a .txt file with a list of these domains or URLs and submitting it to Google. Read More