SEO can be done with two techniques, On-page Optimization and Off-page Optimization. Link building is one of the major strategies of Off Page Optimization. Link building helps in increasing traffic and getting higher page rank. Link building is basically a process of increasing the links directed to your site. Link building is a time consuming and needs effort, so it should be done correctly and effectively.

The links can be from your site or from another site. These links that are generated from your own site and are called Internal links and those which are generated from the other sites, are External links. External links are also called as Back links. Thus these external links are responsible in making site popular and ranking it high. The most important thing is Google Algorithm can check the site linking back it to you. The algorithm checks Page rank, SERP (Search engine results page) rankings, age of website, etc.

So it becomes important to increase the back links. Some things are taken into consideration to increase back links like the content of you site should be unique, effective, full of information and easily understandable. So the people can easily go through it and tell it to others. Forum signatures, which are according to your market, will boost the process.

One-way links are meant for incoming links only. There is no need of displaying your link on that site. These links plays vital role in link building and fetching the visitors to your site. One way linking can be done through web directory submission, blogs, articles and press releases.

When a third website is involved for exchanging the links between two sites then it is termed as Three-way linking method.

Basically Link building includes keyword analysis, submission of site and site Optimization. Exchanging links with other websites by contacting them provided that these sites must be useful to you and involve your market. Link building is an ethical way of making your site popular. It is a cost effective and time saving process. Once it was done properly give results for long tome.