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Search engines are, in a sense, the heartbeat of the internet; "googling" has become a part of everyday speech and is even recognized by Merriam-Webster as a grammatically correct verb. It's a common misconception, however, that googling a search term will reveal every site out there that addresses your search. In fact, typical search engines like Google, Yahoo, or Bing actually access only a tiny fraction - estimated at 0.03% - of the internet. The sites that traditional searches yield are part of what's known as the Surface Web, which is comprised of indexed pages that a search engine's web crawlers are programmed to retrieve