I was a site editor for DMOZ for a couple of years until i got tired of the juvenile antics of the next up the ladder site editor who would circumvent my site approvals in favour of his/her own. The way the system works is the higher ups on the root directories have editor priveledges over the lower editors and even if the category editor accepts the listing the next up the ladder can refuse and remove it. DMOZ is one of the biggest jokes going as some snot nose kid who doesnt have a clue can control a whole category just because he/she was first to accept it. There is no screening process for the editors so some 10 year old can be controlling a category that they know nothing about.
As a search engine forget it unless you want totally biased useless sites that promote the site editor.