What is 3 Way Linking (ABC linking)
3 way linking, also known as ABC linking, is a little more complicated way to setup link exchanges. The benefits of doing this kind of trading is that it is harder for search engine robots to detect the link exchange.
It is a well known secret to most webmasters that incoming links is the way to getting listed on the top of Search Engine Results Pages (SERP). Google, amongst others, has realized that webmasters know this, and have started to take into account what kind of links each site has.
A link from site A to site B, which carries a link to site A, is known as reciprocal links. It’s said that reciprocal links has lately been degraded and don’t have as much effect on rankings as they’ve used to.
Thus, a theory arises where instead of having site A and site B linking to each other (as in most link exchanges), it would be better if site B does not link to site A but instead have site B link to site C. It is not that obvious that the owners of site A and B is trying to enhance the number of incoming links.
ABC Linking Example
An example will make things clearer. Lets say that you own 1 site. We’ll call it site B from now on.
When a webmaster would like to exchange links with you, instead of him putting a link on his site (site A), to your site (site B), and you put a link on your site (site B) to his site (Site A), you ask him to put a link on his other site, site C to your site.
Now the links are as following: site A (his site) « site B (your site) « site C (his site)
To sum up the equation, you get an incoming link to your site, and the webmaster gets a link to his site A.
All-in-all the same result as when doing a direct reciprocal link exchange.