Topic areas of continuing and rapid development, such as the sciences, demand more current information. On the other hand, topics in the humanities often require material that was written many years ago. A note on evaluating Internet Sites. . . While such sites are not necessarily bad, they should be scrutinized. One way to screen web sites is to use a web directory as your search engine.
Web directories vary in restrictiveness, but all have some rating system for site inclusion.
Another highly regarded web directory is the Librarian's Index to the Internet .