A web directory or link directory is an online list or catalog of websites. This is a collection of data coded into categories. It is specialized to connect other websites and categorize those links.DMOZ and Yahoo! There are two very popular and important Internet directories.
The process of sending your own link to a web directory is called a directory submission. A reviewer checks the validity of that link. When your link gets approved and it is included in the directory, then the search engine gives importance to your website. Make sure to submit your site under the most appropriate category to take full advantage of directory submission.
Some things to keep in mind while submitting the directory:
1): Do not submit your site in the wrong category.
2): Submit your site in the most accurate sub category.
3): Do not spam any directories.
4): Do not provide wrong physical address or blog stats.
5): Do not choose to submit to a site that requires reciprocal linking.