white hat SEO (search engine optimization)

In search engine optimization (SEO) terminology, white hat SEO refers to the usage of optimization strategies, techniques and tactics that focus on a human audience opposed to search engines and completely follows search engine rules and policies.

For example, a website that is optimized for search engines, yet focuses on relevancy and organic ranking is considered to be optimized using White Hat SEO practices. Some examples of White Hat SEO techniques include using keywords and keyword analysis, backlinking, link building to improve link popularity, and writing content for human readers.

White Hat SEO is more frequently used by those who intend to make a long-term investment on their website. Also called Ethical 

Organic SEO

Organic SEO (search engine optimization) is the phrase used to describe processes to obtain a natural placement on organic search engine results pages (SERPs).

Some examples of techniques used for organic SEO include usingkeywords and keyword analysis, backlinking, link building to improve link popularity, and writing content relevant for human readers.

video SEO

The term video SEO is used to describe optimizing video content for search engine traffic. The goal when working with video SEO is to have your video content appear in video search engines as well as in the organic search results for major search engines-with traffic being directed to yoursite and not to your video hosting provider.

Video SEO may be abbreviated as vSEO.

SEO Spam

In SEO (search engine optimization) terminology, it refers to SEO manipulation techniques that are used to increase search engineranking, but violate the search engine's Terms of Service. 
See also Black Hat SEO.