I am a little confused here now, the Keyword density index should be 6. But my site will have content update daily, which will bring out a variation in lots of KDI's. What should be done about it??
if your site is haing content update daily then it is very very good and you dont worry about your density.(your content should be always relavent)
kdi is key word density index. It doesnt really matter any more, atleast not with google as I have myself managed to get top rankings without the keyword being present on the page as an exact phrase. On page seo is passe' now.. Its all about whats going on on the pages that link to you.