The Open Directory Project (ODP), also known as Dmoz (taken from its original domain name: directory.mozilla.org), is a multilingual open content directory of Internet website links. The directory is arranged hierarchically by subject, ranging from general to specific. The
Open Directory Project is owned by Netscape, and maintained by community editors who evaluate websites; for inclusion in the directory. Some of the DMOZ editorial team focuses on the addition of new submissions, while others focus on maintaining the integrity of existing listings.
The Open Directory Project data powers the core directory services for many of the Internet’s most influential search engines and portals, including Netscape Search, AOL Search, Google and Alexa. In 2004, Overture announced a search service for third parties combining Yahoo! Directory search results with ODP titles, descriptions and category meta-data; and a year later Gigablast introduced its search-able copy of the Open Directory Project. The introduction of this innovative technology, permitted the search of websites listed in specific categories; “in effect, instantly creating over 500,000 vertical search engines.”
Due to the popularity of the Open Directory, and its resulting impact on PageRank and search engine marketing efforts, domains with lapsed registration that have been listed in the Open Directory Project; have attracted domain hijackers. Dmoz has addressed this issue, by delegating members of the editorial staff; to regularly remove expired domains from the directory. Utilizing Robozilla, a Web crawler developed to check the status of all websites listed in ODP, editors will investigate websites flagged as moved or disappeared; and take appropriate action. Shortly after each crawl, websites marked with errors are automatically moved to the un-reviewed queue, where editors may investigate them; when time permits. This ongoing process is vital to achieving the Open Directory Project’s goal, of reducing link rot in web directories.
A consequence of the Open Directory Project’s free submission policy, is that there are an enormous number of submissions; constantly awaiting review. Regrettably, many of the submissions received by the Open Directory Project consist of spam, and incorrectly submitted websites. As such, the average processing time for a website submission has grown longer; with each year that passes. Furthermore, the time taken for processing cannot be predicted, since the variation is so great. A submission might be processed within hours or it could take several years. Matt Cutts once said, “if you’re frustrated, you can always try a different category that you also think is relevant. You can always go to editors up the chain. But in general, if you can’t get into Dmoz, I wouldn’t necessarily worry about it. There are a lot of other great places to get links across the web.”
Connect with Kristoffer Howes, for more Internet marketing and brand building tips, strategies and advice.