two-way and three-way link exchange
 

What is the difference between two way and three way link exchange?

2 Way Linking
two ways or multiple link building process which are time consuming. Moreover with two way link building one has to find relevant sites to establish a two way link which is a time consuming process and often results in little response.

3 Way Linking
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.