Yahoo is by far the largest and most popular directory, but note that Yahoo's sites are user-submitted and are not selected for quality or content. Because most directories and subject guides are evaluated and maintained by humans, they often produce more relevant results than search engines and lend themselves best to searching for information about a general subject rather than a specific piece of information. Large, fairly comprehensive directory with mostly popular, nonacademic sites. Includes short descriptions and no ratings or rankings. Includes Annotations with evaluation.
Quality varies depending on the subject area.
BUBL Link From Great Britain. Selected Internet resources covering all academic subject areas. This is a list of 600 important Web Sites in all academic disciplines. Infomine Selected by Academic Librarians. Includes academic and professional sites with annotations .