Link building is a methodology that results in getting external pages of another site to point to your website. They may be links from a blog, affiliates, or any relevant source. Inbound links help search engines understand the popularity of a site and hence are important.
Because each inbound link to a site results in a SEO boost for that website, the link enhances the rankings significantly. Unfortunately, at one time, SEO experts misused the power of this factor and advocated using underhanded techniques ...