The Deep Web

Table of Contents


The Deep Web

Sounds scary, right? The deep web is actually quite valuable. The deep web, according to Wikipedia, is: "World Wide Web content that is not part of the surface Web indexed by search engines. Dr. Jill Ellsworth coined the term "Invisible Web" in 1994 to refer to websites that are not registered with any search engine (Bergman, 2001).[1]" So there are millions of resources that Google, Yahoo, Ask, or any other search engine just don't pick up due to the nature of how they search for information. We are going to take a look at a few ways to get into the Deep Web and find information that is hiding.

Here is a great tutorial on the deep web. Let's jump out to it for some further clarification.

Ideal Uses:
  • finding resources on specific topics
  • graduate work
  • students who are looking to go further in their research
  • materials other than just websites.


By the way, if you are using Google Notebook, now is another great time to make sure it is hooked up and running!


From Eric Hoefler:
About the "deep web"
  • Estimates are that the "deep web" contains 500 times the information of the "surface web"
  • The deep web consists mainly of dynamically-generated information, unlinked content, non-text content, and protected content (held in premium databases)
  • Search adding "database" to your keywords [i.e. plane crash database]. This will likely direct you to relevant databases that contain information otherwise hidden from surface webcrawlers
  • Schools, public libraries, and universities often provide access to premium databases, allowing researchers to access the "deep web" freely.
  • Some other resources for searching the "deep web"
And I will add these to the mix: