When it comes to link building there are correct ways to do this and completely wrong ways. If you are using a two-way link building service or just linking between your own sites then you really are making a huge mistake.
This is a waste of time because Google has figured this out, and now makes those links basically worthless in terms of page rank and such. Each link on the web has value.
The value of a link is determined by its position, number, and the PR of the site it is located on. If your link links to a page that has a link going back to the original site then Google web crawlers can pick that up and make the connections.
However if you use a 3 way link system then your links have a lot of value and you can make a lot more traffic off of this. If a site links to you and you don’t link back to it, then it has a lot more value to Google.
You simply link to one site and that site in turn links to another site. That third site then links to you and completes a perfect web that is untraceable by anything Google can do.
This can build your Serps immensely and give you a major edge over all your competition. You would be surprised just how fast Google can move you up in rankings.
Now is the time to stop wasting your time on useless link building that does nothing and start using a system that is prove to work.