Keyword density is that,how much time a keyword occur in your content.Occurrence of a keyword in a particular content should be 3 to 4%
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. In Search Engine Optimization keyword density can be used as a factor in determining whether a web page is relevant to a specified keyword or keyword phrase.Many SEO experts consider the optimum keyword density to be 1 to 3 percent. Using a keyword more than that could be considered spam.
SEO is one of the most valuable actions that you can perform to make sure that your site is found by users. A 3% to 4% keyword density in the body of your content pieces will produce the best results from what I have read. But, sometimes now with Google, less is more. You many also want to consider using multiple relevant keywords within the body of one content piece. Content and keywords will help you rise to the top of the engines. Use them prudently instead of liberally.
Not totally agree. In time of writing for readers, we have to keep the point in mind, because key word density has importance to search engine.
Keyword density is the major factor which can harm the site because when we use keywords more than its density,It consider as spamming.