Question: How big is the Invisible Web?
The Hidden Web, aka the Deep Web, aka the Invisible Web, is the part of the Web that can't be easily accessed with a simple search engine query. How big, exactly, is the Invisible Web?
The Invisible Web
is estimated to be literally thousands of times larger
than the Web content found with general search engine queries. According to Bright Planet
, a search organization specializing in Deep Web content extraction, the Deep Web contains nearly 550 billion individual documents compared to the one billion of the surface Web.
The major search engines - Google, Yahoo, Ask, Bing - don't bring back all the "hidden" content in a typical search, simply because they can't see that content without specialized search parameters and/or search expertise.
So how do you find the hidden Web? Here are a few resources: