Example of Invisible Web Sites Dictionaries http://www.m-w.com Telephone Numbers http://www.infospace.com Clinical Trials http://www.clinicaltrials.gov Library Catalogs http://www.libdex.com/webcats Philanthropy and Grant Information http://lnp.fdncenter.org/finder
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If you really want to find the good stuff, then always use more than one search tool
Yahoo! typically used Google for its search engine results and the Open Directory for the Yahoo! directory. Now Yahoo! has just released its own search engine Yahoo Search!
In 2003 Microsoft bots were detected indexing the Web – rumoured to release its own search engine between July 2004 and January 2005Web Search Facts
Many search engines are also directories
Some directories are also meta search engines
The Open Directory has 64,000 editors and about 590,000 search categories!
However, directories typically have much smaller databases than search engines
No search tool is able to search the entire Web, though some meta search engines go to the Deep Net, Dark Web or Invisible Web!
Google is the most popular search engine, but the Yahoo! portal is visited more oftenWeb Search Facts
Most search engines...