One way backlinks are links that point to any given webpage from another page not on the same website. It also means that the page which has the link pointing to it doesn’t point back to that external link. The reason one way backlinks are so important for link building and Off-page Optimization is because search engines view these one way backlinks as a form of vote or recommendation pointing to this webpage. This is considered by search engines to be more credible than reciprocal links which simply means a two way link pointing to a site and back from it. This is usually done through an agreement between the two websites which search engines devalue and consider spam. Other techniques for link building include article submissions, free Blogs and directory submissions.