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SEF - Search Engine Friendly, July 2004
Search engines continued to become more sophisticated and were eventually able to spot most of the tricks used by webmasters. Thus, webmasters were always trying to find new ways to get to the top of the search results. Using mostly trial-and-error, they were able to determine what various search engines used to rank a page. Terms such as "keyword density", "prominence" and "density" were used by the industry. This marked the beginning of the SEO industry.
As search engines closely guard their criteria commonly referred to as "algorithms," SEO companies exploit this void in knowledge by promising extraordinary results. The problem with these promises is that the search engines are always in a state of flux. Not only that, but changes that are made to a website are not instantly reflected in the results. Changes in the search rankings can take weeks and even months, making a cause-and-effect relationship nearly impossible to prove. By the time you may have proved it, they have changed their formula. Continued>>>