JNB Web Promotion Internet Marketing and SEO Newsletter

by John Bertrand  November 30, 2007 edition:

 About keywords
 

Keywords should be relevant to the page content.

True Count
Total word count must be 250 to 600 on a single web page (except html tags). Less or more words may diminish the chance of getting better rank.

Keyword Density (KD)
At its most basic level, KD refers to the percentage of total words on the page that are keywords. So, for example, to be properly optimized, you might need a 3% KD on Google and a 2% KD on Alta Vista. 2%-3% is considered a good keyword density

Formulas for calculating KD (Keyword Density)
KW Density (KD) = Occurrence / Unique words
KW Density (KD) = Occurrence / Total words

Where total words would be the number of the words written in body
excluding the html tags and Occurrence would be the number of a particular
keyword. Keyword Density would be calculated for individual Keywords.

Keyword Prominence (KP)
This is a measure of the placement of keywords on your pages. So it's important to not only have the correct number of keywords, but to ensure
that they're in the correct positions throughout your pages. As with KD, each
search engines has a different optimal KP. Same Keyword should not come
more than once successively as this may lead to search engine spamming.