In the example below - sample text content - keyword density is a bit exaggerated for demonstration purposes - but you'll get the picture. Having one keyword in the metafiles and one matching in the page content is keyword relevancy. Having a keyword in the metafile and several occurrences in the page content is keyword density

density

Below is a sample set of keywords as they would appear in the source code:

<meta name="keywords" content="keyword density optimize metafile text copy web search engine results maximize page rank title description targeted advertising SERP Google Yahoo MSN upgrade">

Sample text content that would be visible to the site visitor (keywords in BLUE):

Whether it is Google, Yahoo, MSN Live or any other web search engine you are tailoring your targeted advertising to you need keywords in your text copy. The combination of keywords in your metafiles and text copy is the factor that creates keyword density - and keyword density is what gets you on the Search Engine Results Pages. That is what this is all about - targeted advertising appearing on SERPs!

Presently keyword errors and poor web page titles and web page descriptions are the most common cause for falling page rank.

Search-Engine-Upgrade.com can optimize your site for maximum possible page rank, using this and many other "tune-up" techniques we are very familiar with.