Web directories are sites containing collections of links to other sites arranged into different categories. They differ from search engines in two ways. First, URLs are not gathered automatically but are instead submitted by site owners. Second, directories generally use human editors rather than automated software to review sites and decide if they will be included in the directory.

Submitting your site to web directories is an easy link building strategy, because anyone can submit and get listed. Directories can be of little use for the same reason. However, because it is a one-time affair, it is usually worth the effort. ...

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