3 way link from sites hosted on completely different servers a webmaster will build link quality while not the search engine having the ability to discover the link commerce as simply. most of the people participating in 3 way link exchanges do it with the specific intent to control search results.
Some webmasters own multiple sites and try to build up one of their specific sites by offering link exchanges from their other sites. In doing this they add a link to you on their other site and get you to link to the main site they are trying to build up.
Three-way linking means - the first website connected to a second, second website connected to third and again third website connected to the first website. 3-way linking has benefits as well as drawbacks in SEO. If you are a network of related quality websites, it is a good option. But if the websites are poor in quality and unrelated, it can have a negative impact on your website.