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| Subject Directories generally involve human selection: the websites included in a directory usually have been examined, selected, and categorized by someone, often an "expert." The categories in a subject directory are hierarchically organized. In general, one finds fewer hits in a subject directory, but the hits tend to be more on target. Directories are useful when browsing for information about a general subject. Start with a likely broad subject or topic, then drill down through the subtopics. A few subject directories to try: |
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| Search Engines are more comprehensive than subject directories. In general, a search in a search engine yields many, many more hits than one finds using a subject directory--but often, many of the hits are not as relevant. The indexing in search engines is done by computer--electronic "spiders." Search engines are useful when searching for specific information--not browsing. A few search engines to try: |
This page was last updated on September 30, 2009.