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.

So where’s the rest? The vast majority of the Internet lies in the Deep Web, sometimes referred to as the Invisible Web. The actual size of the Deep Web is impossible to measure, but many experts estimate it is about 500 times the size of the web as we know it.

Deep Web pages operate just like any other site online, but they are constructed so that their existence is invisible to Web crawlers. While recent news, such as the bust of the infamous Silk Road drug-dealing site and Edward Snowden’s NSA shenanigans, have spotlighted the Deep Web’s existence, it’s still largely misunderstood.

Read more: The Ultimate Guide to the Invisible Web | OEDB.org.

Eye-opening and informative post. Topics discussed:

• Search Engines and the Surface Web
• How is the Deep Web Invisible to Search Engines?
• How to Access and Search for Invisible Content
• Invisible Web Search Tools