Mass media Government Specialized sites Introduction Business Entertainment Government Health and Medicine Law News and Information Other Countries Reference Glossary Specialized Sites General indexes and search engines are fine for much of the research that people do on the Internet. They cover a broad range of resources and provide access to a wealth of information. That same breadth, however, can be a disadvantage. No single site can begin to index or search all Internet resources. In such cases, specialized sites prove useful.
Specialized sites concentrate on resources dealing with narrow topics.
Most of them are search engines, but some specialized indexes are available, too. The advantages are similar to those that exist in libraries. You might find some legal information at a public library, but you would find much more at a law library.