The link building is one of the most challenging skills and that is also the most powerful work in SEO. By using different skills the link building is the culmination of all them. If you want other sites to have their link on your site for that you need to have the master content, best programming, sales, good marketing strategy and psychology.
Link is a part of SEO and it is not considered as everything in SEO. There are SEO professionals who prefer to give a lot of attention to the engine’s algorithm to the factors of link related. By using the link the search engine will easily analyze the popularity of website and also the number of pages and also such pages that are linking to them and their popularity. The sites that are trust worthy like to have the link of those sites which are trustable.