Links play imperative role to increase search engine rankings. Link building is the process of creating inbound links to own site. Exchanging links with similar website means site X will place site Y link in it's website and site Y will place site X link in it's website . This type of link building is known as reciprocal links but now a days Three way linking is more popular. In this there are 3 websites links to each other e.g. Site X will place site Y link, site Y will place site Z link and site Z will place site X link. And placing the link on the others website is one way link building...