Deep Web Research

Web research for graduate work, government reports, or even medical or legal research goes far deeper than either Google or Wikipedia.

Apparently, there is a "deeper Web" (very Shakespearean), and it includes Research Beyond Google: 119 Authoritative, Invisible, and Comprehensive Resources:

"There's a lot of junk out there -- outdated pages, broken links, and inaccurate information. Using Google or the Wikipedia may lead you to some results, but you can rarely be sure of accuracy. And what's more, you'll only be searching a fraction of all of the resources available to you.

"Google, the largest search database on the planet, currently has around eight billion web pages indexed. That's a lot of information. But it's nothing compared to what else is out there. Google can only index the visible web, or searchable web. But the invisible web, or deep web, is estimated to be 500 times bigger than the searchable web. The invisible web comprises databases and results of specialty search engines that the popular search engines simply are not able to index.

"Do you think your local or university librarian uses Google? Sure, but certainly not exclusively. In order to start researching like a librarian, you'll need to explore more authoritative resources, many of which are invisible."

These include:
* Deep Web Search Engines
* Art
* Books Online
* Business
* Consumer Information
* Economic and Job Data
* Finance and Investing
* General Research
* International Information
* Law and Politics
* Library of Congress
* Medical and Health
* Science
* Transportation

The Medical and Health category includes such old friends as PubMed Central.

Thanks to The Point Media for the link.