Hidden deep or invisible web

The hidden or deep web are portals, databases, directories, clearinghouses and gateways that are not available via regular search engines. Most of the Web is not searchable. If you add gateway, portal, directory, or clearinghouse at the end of your search you will be using the deep web.

Also search engines such as; Academic Info, Infomine, and Librarians Index to the Internet will also provide you with capabilities to search the hidden web. These searches are longer and require 5-10 minutes of processing time. Be prepared to wait.

 

 

Recommended General Subject Directories: Table of Features

Web Directories	Librarians’ Internet Index www.lii.org	Infomine infomine.ucr.edu	About.com www.about.com	Google Directory directory.google.com	Yahoo! dir.yahoo.com
Size, type	Over 20,000. Compiled by public librarians. Highest quality sites only.	Over 125,000. Great, reliable annotations. Compiled by academic librarians from the University of California and elsewhere.	Over 2 million. Generally good annotations done by “Guides” with various levels of expertise.	About 5 million. Selected by the Open Directory Project and enhanced by Google searching and ranking.	About 4 million. Very short descriptions
Phrase searching (what’s this?)	Yes. Use ” ”	Yes. Use ” “ |term term| requires exact match	Yes. Use ” ”	Yes. Use ” ”	Yes. Use ” ”
Boolean logic (what’s this?)	AND implied between words. Also accepts OR and NOT, and (  ).	AND implied between words. Also accepts OR, NOT, and (  ).	No.	OR, capitalized, as in Google’s web search engine.	Yes, as in Yahoo! Search web search engine.
Field searching	Advanced Search allows Boolean searching within subject, titles, description, parts of URLs, and more.	Select options under search box to limit to Author, Title, Subject, Keyword, Description, various subject categories, and more.	No.	Same as in Google’s web search engine.	As in Yahoo! Search web search engine.

 

Subject Directories.  2008.  UC Berkeley Library.  Accessed on 7 Jan 2009. http://www.lib.berkeley.edu/TeachingLib/Guides/Internet/SubjDirectories.html