Search Engine Optimization, just like internet itself, is not foolproof. Some people make use of unethical techniques and other dirty tactics just to ensure a high traffic volume for their web sites. This is known as spamdexing, also referred as black hat SEO. There are different methods that can be used, and all lead to one thing—the manipulation of the relevancy or the prominence of resources that search engines produce.
The term spamdexing—a combination of spamming (or sending online users unsolicited messages and other information) and indexing—was already used during the mid-‘90s, at the time when SEO is at its infancy stage. One of the most common types of spamdexing is keyword stuffing. A web master will put a lot of keywords in his web site that are in no way related to the general content of the page. Most of these words are hidden in the background (the font color used is similar to that of the background to hide it). Then there are gateway sites. These are web pages that don’t have contents of their own, only links that act as doorway for the real sites with real contents. These gateways are specifically designed to rank high in search engines but don’t really serve any purpose.
Google and other search engines have been vigilant about these bogus sites. They have improved their search process while putting up a fight against manipulative forces online. Yes, these dubious sites still exist today, but majority of these bogus web pages are already excluded from search results.
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