Hidden Web

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Hidden Web

The Hidden Web (also called the "Invisible Web" or the "Deep Web") consists of content that is blocked from search engines such as Google and Yahoo. Examples are dynamically created content (such as databases), password-protected archives, and sites using robots.txt files or robots meta tags. It is estimated that Hidden Web content is 400-500 times larger than the known, indexed portion of the Web (which was estimated to be 11.5 billion pages as of January 2005.) In order to be an effective legal researcher, you need to know how to access Hidden Web resources.

Amazon.com

The Amazon Online Reader lets you search through and read selected pages from more than 100,000 books in the Search Inside program. If you have purchased online access to a book with Amazon Upgrade (additional charge), you can also use the Reader to read the book, create highlights, bookmarks, notes, and tags, copy text, and print pages of the book.
BUBL Information Service
Contains selected Web resources covering all academic subject areas. Search or browse by Dewey Decimal Classification, subject, country, or format.
CompletePlanet
Contains links to over 70,000 Invisible Web resources. You can browse any of more than 40 top-level categories or search for a database.
DeepPeep
Search engine specializing in Web forms. Tracks 13,000 forms across 7 domains (Auto, Airfare, Biology, Book, Hotel, Job, Rental).
Google Answers
More than 500 carefully screened researchers are ready to answer your question for as little as $2.50, usually within 24 hours. You can also browse or search previously answered questions. Note: Service discontinued -- stopped accepting questions at the end of December 2006.
IncyWincy
Claims to have indexed 150 million Web pages. The Advanced Search page lets you limit searches to pages containing a search form.
Infomine
Search or browse more than 100,000 databases in 9 major subject categories, including government information.
Internet Guide to Engineering, Mathematics and Computing, Formerly Edinburgh Engineering Virtual Library (EEVL)
Features the Internet Resource Catalogue, a collection of more than 10,000 links to relevant quality sites, and the Ejournal Search Engine which searches the content of more than 250 freely available full text ejournals. Also provides access to specialized databases, jobs and industry news.
Intute, Formerly Resource Discovery Network
Created by a network of UK universities and partners. Subject specialists select and evaluate Web sites and write high-quality descriptions of the resources. Database contains more than 115,000 resources and is organized into 4 main categories: Arts and Humanities, Health and Life Sciences, Science and Technology, and Social Sciences. Search by keyword or browse an A-Z subject list.
ipl2, Formed via merger of the Internet Public Library (IPL) and the Librarians' Internet Index (LII).
ipl2 is a public service organization and a learning/teaching environment. To date, thousands of students and volunteer library and information science professionals have been involved in answering reference questions for our Ask an ipl2 Librarian service and in designing, building, creating and maintaining the ipl2's collections.
Search Systems
Links to more than 36,000 free searchable public records databases worldwide. U.S. coverage includes national and state resources. Site requires subscription; as of May 1, 2006, rates are $4.95/month or $48.50/year.
Turbo10
Allows you to select and search up to 10 different specialized Hidden Web search tools from a list of more than 800 sources.
Wayback Machine, Internet Archive
Archive of more than 150 billion Web pages. Search by a site's URL; the results page will list all archived versions (in many cases, as far back as 1996) that are available to view.
Wolfram | Alpha
Not a search engine -- it's a "computational knowledge engine" that generates output by doing computations from its own internal knowledge base, instead of searching the web and returning links. Here's an example for the distance from the Earth to the sun using football fields as the unit of measurement.
Yahoo Answers
Your question is open for others to answer for 14 days. Once your question is answered, select the best answer, or have the community vote for the best answer. You can also browse or search an archive of more than 10 million previously answered questions.

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