SEO or search engine optimization is one of the many popular Internet marketing techniques used today. Part of its popularity lies with its techniques. Unlike SEM or search engine marketing which deals with paid inclusion, SEO involves the use of techniques that improves the volume or quality of traffic to a web site from search engines via “natural” or un-paid search results.

SEO also gained notoriety because of its techniques. According to many SEO consultants, such as those from SEO Philippines companies, SEO techniques are divided into two different categories; the one which is recommended by search engines while the other is not. These are called as the white hat SEO and the black hat SEO.