kw density is a combination of the # of times a keyword or a keyword phrase in proportion with other words, appears on a Web page. the more times the keyword appears in relation to the total number of on page words, the greater the overall keyword density via seochat you can this sites http://gorank.com/ and http://keyworddensity.com/ to check your keyword density and keyword proximity...

About Keyword Density?
 

Hey,
In my sense, the keyword density is nearly 5% - 7% of keywords should contained your website..And main thing is there is no such a rule on Perfect Density..keep go on.

Keyword density refers to the ratio (percentage) of keywords contained within the total number of indexable words within a web page.

Keyword density is the percentage of times a keyword or phrase appears on a web page compared to the total number of words on the page.

Keyword density is a combination of the number of times a keyword or a keyword phrase, in proportion with other words, appears on a Web page. The more times the keyword appears in relation to the total number of on page words, the greater the overall keyword density. The more times that other words appear, the lower the proportion of keywords, resulting in a lighter keyword density.

Re:
 

Keyword density are really important to get maximum from your content. We all know power of content and we can get maximum of your content if it is written with good keyword density and keyword proximity.

I read the whole post.Thanks for the tips i know that this article very helpful to me that do not aware about the benefits of seo.