Here’s a fact for you, 85 to 95% of websites are found through a search engine. You may have the most incredible website on the Internet, but it will receive little or no traffic without search engine visibility and ranking. Can you imagine a billboard in the Sahara desert? Who sees it?
So, how will searchers find your website? What types of search engines could they use?
Search engines fall into two categories. The first is referred to as natural, organic or standard. The second is called pay-per-click, paid inclusion or paid placement.
Natural, organic and standard are interchangeable terms describing a search engine that bases its search rankings on a ranking algorithm. The algorithms involve a number of criteria and parameters, all relating to the content of the website, the website’s size, the number of incoming links to the website, and the content’s relevancy. You will hear terms such as keyword relevancy and keyword density to describe various components of the algorithms.
http://www.squarepegweb.com/blog/view/Know_About_Search_Engines__PayPerClick
