SEO stands for "Search Engine Optimization". All major search engines such as Google, Yahoo and Bing have such results, where web pages and other content such as videos or local listings are shown and ranked based on what the search engine considers most relevant to users.
How well you rank with search engines can be a direct correlation to your revenue stream. Ensuring your website appears with high ranking for relevant searches is critical your internet marketing campaign. At a high-level, good ranking with search engines requires all three of the following: