1. Keyword density refers to the ratio (percentage) of keywords contained within the total number of indexable words within a web page.
2. The preferred keyword density ratio varies from search engine to search engine.
3. In general, it is recommended using a keyword density ratio in the range of 3-7%.
4. Keyword Frequency refers to the number of times a keyword or keyword phrase appears within a web page.
5. The theory is that the more times a keyword or keyword phrase appears within a web page, the more relevance a search engine is likely to give the page for a search using those keywords.

No matter how hard some people try to mystify SEO, it is not as complicated as many would lead you to believe. Despite all the techno jargon that many in the field will throw at you: SERPs, SEM, PageRank, Keyword Density, Vertical Search, Algorithms... SEO is really simple to do if you understand some basic concepts and follow some easy steps..

Search engine optimization (SEO) is necessity for the success of almost every site. SEO is the use of keywords from the beginning of the site that is called page title to throughout the website content. In particular, the density, placement and the actual keywords phrases themselves..