I have a site on the first page of google that dropped from #3 to #9 recently, and I'm thinking its keyword density. i use Easy SEO WP plugin, but I think it can be a little misleading. I have a couple of questions. Are "pill" and "pills" regarded as the same keyword in google's eyes. When I type in pills it will bold pill as well and vice versa. What would be a good free site to check keyword density. I'm confused on how to check for something thats a 3 word phrase. if its 3 words and shows up 1 time out of 100 words is a 1% density or 3%? If someone could clarify that, that would be great.