Racing to keyword competition

If you are using a unique keyword to optimize your website, soon it will be used by the other bloggers or shall we say "competitors". It is being reflected on your SEO performance, on how you use your unique keywords which are not yet used by the other competitors. However, it is more likely used to get their chances of increasing their site or blog to SERPS because if the competitors use the same keywords as yours, it is a race on who's gonna be the top of the mountain or the winner of the race in search results. It depends on how good you are in web optimization and how you maintain it. As for me, I barely need this just to make my site popular and be on the top of SERPS.