one way link is one that links to you…2 way is reciprical you link to them they link to you and 3 way is where Site A > Site B > Site C
I Mean, Site B backlink point to site A and site C backlink point to Site B
Three way link building is helpful to get quality and relevant one way links which increases PR and search engine ranking. The only thing you need is to have another website for link exchange purpose.
Well one way link building is non reciprocal link building in which site A links to site B.In this case site B gets a boost but no boost to site A.
Two way link building is reciprocal link building in which both site A and B links to each other and hence both gets boost.Example of two way link building is directory submission with reciprocal links.
In three way link building site A links to site B,site B links to site C and site C links to site A again.These are non reciprocal links and all gets strong boost.
Some one place your link on his domain, but in return, you have to place another new link on your domain.
Eg. Link A on Site B > Link B on Site C > Link C on Site A
This is old trends of link building, now a days, very few web masters are doing 3Way link exchange.
Through One way link building you can submit link on another site, Two way link building through is reciprocal. You can link excange to another site. And three way link building make a circal suppose A site like submit on B site and B site link submit on A Site.
3 way link building is one of the link exchange programs. If we are exchanging our links, i will add your link in my supporting site instead of exchanging website and you will add my link in your supporting site.