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Often confused with search engines, directories are completely
different.
Unlike search engines, directories use "human indexing;"
people review and index links.
Directories have rigid guidelines that sites must meet before
being added to their index.
Therefore, they have a smaller, but cleaner index.Yahoo!, LookSmart,
MSN, Go and others are directories.
Factors that influence search engine rankings are irrelevant
to directory rankings.
Since people review sites, more attention is placed on the
quality of a site: its functionality, content and design.
Directories strive to categorize sites accurately and often
correct categories suggested by a site's webmaster
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