keyword density

[descorpio]

This refers to the percentage of content that is made up of targeted keywords. Every page must have title, tags, keywords. One must see to it that the important keywords must be placed well at the top of the sites.

[hem1234]

Ya it should be in title, meta description, page heading and in the page content, anchor text. Beneficial in getting good rank.

[iceshards]

Because keyword density is an on-page factor it is too easy for website owners to manipulate so it carries much less weight nowadays...