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Use the Internet to Find Information About a Topic
 Search Tools - The three basic approaches to searching the web are subject directories, search engines, and meta search engines.
Subject Directories - indexes of Web sites organized by specific subjects.
If you're using a directory for your search, you don't have to use keywords--you may simply follow the subject links provided by the directory. However, most directories allow you to input keywords at any point along your search path.
- created by human selection -- not by computers or robot programs
- organized into subject categories, classification of pages by subjects -- subjects are not standardized and vary according to the scope of each directory
- don't contain full-text of the web pages they link to -- you can only search what you can see
(titles, descriptions, subject categories, etc.)
- vary from small and specialized to very large, but are smaller than most search engines
- often evaluated and annotated - but not always
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