Lets say my site is on "Dog Food": I was ranking in top 5 for "Dog Food" and "Dog Chow". Google shows Dog Food to be the lesser of the two in demand. Hoever, I know from experience Dog Food is more traffic. Meanwhile, some sites have popped up for Dog Chow and I've lost ranking from like the top *30*.. or even more. My niche is tiny and I'd like to get back up there. But -- do you think Google is penalizing me for having my main page optimized for two two terms?? Why did I lose such ranking for Dog Chow when this niche really isn't that competitive in the grand scheme of things?