So what is a backlink? A backlink is simply a link in one direction from another web site to yours. A backlink is considered “inbound” link when directed towards your website. It’s the more inbound the better since it gives the search engines more of an assurance that your content is valid and relevant to the query/niche you have targeted. Backlinks are like vote cards for your site, each vote cast to you increases the chance that your site will show up in the search engine results.