SEO (Search engine optimization) is the art of achieving high ranking in Search engines results like Google, Yahoo, Msn, Ask and more search engines. SEO process mainly depends on three things: site code, content, and incoming links. If you focus too much only one single aspect of three aspects, you will have a third of the visibility in search engines. Make sure that all three things make your site listed top in search engines whereas different -2 search engines use different techniques but these three things are still constant.

Here I am especially focus on link building (process of getting inbound links for site). Incoming or inbound links are those links that point to your web site from another site. Link building is a major aspect of SEO (Search engine optimization). It can affect your site positioning in search engines by getting number of inbound links for your website. The whole purpose behind link building is to increase your link popularity and number of incoming links to your website. Search engines consider following things in your website

Keyword Analysis

Keyword Analysis also known as Keyword Research is an important step in the search engine optimization. If you don't choose good keywords, all efforts to boost your ranking will be wasted. Keyword phrase play major role to promoting your website. We should choose frequently and website theme related keyword phrase. For finding frequently used keyword, you can use different tools that are usually free as well as good.

The Keyword Phrase (obtained from Keyword Analysis) play major role for getting traffic to your site. Whenever users have to find any thing in Internet, they search through a keyword in search engines. By knowing how high you appear in a search engine and the number of visitors you receive, you can estimate the increase in the visitor traffic you could expect if you target specific keyword phrases or groups, to improve the ranking of these key terms. If your site listing on top, definitely you will get traffic (more visitors will reach on your site).

For generating the broadest possible list of keywords for your web site, following things should keep in mind, keyword relevancy and keyword popularity. You need to think outside your site and develop a good list of words.

After preparing keyword list by keyword analysis of different site, find out the ranking in search engines to find number of searches and relevancy. At this point we will reject many of words.
 For Keyword Analysis different free tools are available on Internet. some of them are https://adwords.google.com, http://www.seochat.com/seo-tools/keyword-density/

If you want to index your site in Search Engine, use the Meta-tag description and Meta- tag keywords attribute on every page of your site. If you don't want a page indexed, then try the robots exclusion tag. The robots text exclusion protocol has more support with spiders