Link tools really are a broad class of tools which cover the invention, analysis and reporting on of a variety of website links (e.g. backlinks, outbound links, internal site links etc). They may be used to check which sites are linking for your (or perhaps your competitors!) website, if individuals are linking back or just to confirm your personal internal linking structure is working correctly. They may be essential tools within your SEO campaign as backlinks really are a vital contributory aspect to your sites internet search engine ranking.