Dmoz (the Open directory PROJECT/ODP) is a collection of manually edited directories that provide results or data for search engines. Most of these manual editors are volunteers, so it is not an easy thing to add DMOZ to the site, and some sites even need more than a year to be included ....
But do not be discouraged, because by DMOZ included with Google has the same important significance, many webmasters believe that the DMOZ included even than the annual cost of $300 paid to collect Yahoo is important.
DMOZ is now used by most major search engines. This fact proves that DMOZ is the most important submitting object and why thousands of websites have spent months asking DMOZ editors to add their own sites to the directory. The ultimate benefit of being eligible for DMOZ is that you can get a good ranking on other search engines, which is more than just a separate DMOZ site (http://www.Dmoz.org
Google's top three locations are more likely to be reserved for sites that join DMOZ at the same time, and
AllTheWeb to add DMOZ Web pages/sites;
AOL Search is a hierarchical directory organized by topic. All AOL user-submitted web site content is maintained by Open Directory Project (Open Directory projects), DMOZ, and
HotBot and its parent company Lycos also use DMOZ data;
AltaVista Also use DMOZ to support their site search,
Inktomi use DMOZ to purify their results list, or search quality control;
Netscape et cetera ...
These are well-known search engines on the web, and there are hundreds of smaller search engines and directory indexes that use DMOZ data at the same time.
Now you can see the quality of the results DMOZ has provided to the web community and the value behind these results.
As long as your site is dmoz into the index directory, it will also appear in other search engines. Google's catalog search results are directly using DMOZ. Using the DMOZ database of search engines and other directory indexes also have their own tuning algorithm, but the public opinion that included in the DMOZ site rankings in these search engines will be improved, this phenomenon is particularly inclined to focus on link popularity of search engines, such as Google.
Adding DMOZ also results in hundreds of links pointing to your site, which come from other directories or search engines. Because the search engine and catalog recognize the value of your site, so the site in the search engine rankings will improve. Why wouldn't it be like that? If 200 people told you to buy a gift at a store, you would seriously consider that store, right?
