Link Building involves both time and analysis. Businesses must ensure that their Incoming Links are authority links- a term used to describe links from popular (high ranking) websites. Blogging has also shown positive results in building links. Social Networking, due to its wide reach and popularity, can also be considered for link building.
The advantages of link building are too many. For instance, it helps draw Quality traffic from websites that are relevant. Also, it gives you immense search engine exposure. It also contributes to search engine indexing.