Link Glossary: On-Page Factors

On Page Factors:

• Ranking criteria that can be found on a web page. These factors include: text on the page, meta-tags, keyword density, keyword proximity, etc.
  

A brief word about some factors. Some people don't seem to understand the importance of meta-tags, but they're vital for SEO and SEM. Meta-tags increase the attractiveness of your website to search engines. Keyword density is also a must; if you are looking to improve your organic search results for a particular keyword, you must include that word in the text on your page at least 4 times as a rule of thumb.

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Glossary Definition From The Definitive Guide to Link Buying by Patrick Gavin