SEO Cat and Mouse Game
Things like over saturation of your keywords can actually lower your page ranking, similar to the way that having too many credit cards can hurt your credit score. In SEO terms more is not always better.
Companies began experimenting with ways to get better page ranking around 1994. Getting good page ranking was not super complicated in the early days of the internet, however the search engines quickly become much more sophisticated in order to offer the most relevant results to their users. And that is how the cat and mouse game started. SEO companies continue to search for ways to achieve higher placement on the major engines and the engines continue to become better at preventing this. Search engines also have learned to detect some common practices which are considered unethical and may even demote your ranking status as a result, or maybe even drop you from its index altogether.
SEO companies continue to learn and change the way they optimize websites for best placement and in response search engines are continually revised in the way they pull results to try to prevent companies from playing to search engine.
Today’s most popular search engines employ different techniques try to get the most natural and relevant results for a search. For instance Alexa with a list of known URLs from around the whole entire Internet, then it fetches local links that it finds as it goes. Each search engine uses a different method to collect and rank listings. Google uses an entirely other method of which includes distribution over many smaller computers for added speed.
