mozDex was a project to build a internet scale search engine with FOSS technologies like Nutch. Since its search algorithms and code was open it was hoped that no search results could be manipulated by either mozDex as a company or anyone else. As such, instead of having to trust mozDex to be fair, it puts the trust on the community of users through the same "peer review" process that is believed to enhance security of Free Software like Linux.
mozDex aimed to make it easy and encourage building upon this open search technology to extend it with various additional potentially useful search related features. Some of the latest features added or announced by mozDex included social bookmarking via free simpy service, "did you mean" spell checking, anti-spam technology and instant crawl.
As an open search engine mozDex relied heavily on community feedback and actively solicits user opinions as well as encourages discussions about various aspects of mozDex growth.
In 2006 mozDex aimed to add around 15 million pages a day in order to reach the goal of more than 4 billion pages indexed at the end of 2006
As of October 2012, the mozDex search engine is unavailable and there main domain www.mozdex.com appears to have been take over by others.