Dmoz is an open directory project that gathers websites arranged by subjects. The directory is managed by community editors and they are in charge of evaluation each submission. Dmoz is a directory created to include relevant websites, useful for the users. Not all of the websites are excepted. In order to submit a website you must follow the polices for the website to be included in the directory.
Think of it sort of like Wikipedia only with lists of websites instead of crowdsourced "facts. DMOZ is essentially a relic of an old method of cataloging websites. Each site was evaluated for content something librarians call "aboutness" and assigned to the category or categories that best matched. From there, you could then look at Arts links and then to Crafts 99 links and then, finally, to Balloons 6 links. At this point, you'd see links to six websites with brief descriptions of what you would find at each site.
This is the top 10 most credible, high Page Rank directories that you want to get every one of your sites listed in. There are thousands of directories, but site owners report the most success being listed in these 10, specifically. This is the largest trustworthy human-edited directory in the Internet.
DMOZ may be one of the most significant directories remaining after Yahoo closed its directory some years ago. DMOZ was launched in It powered the directory services of several search engines and web portals. The site underwent a redesign less than a year ago. In the pre-Google era, open directories like DMOZ were the most trusted sources of information for web users.