According to the RDF dump, there are a number of occasions where the same site with the same title and same description appears in the same category twice. Conducting a search on the ODP at http://search.dmoz.org/ shows the "2 sites in one category" problem in the search results, but does not show the problem in the actual categories themselves.
Examples:
Category: http://dmoz.org/Arts/Music/Bands_and_Artists/L
URL: http://www.geocities.com/parttimelife/
Title/Description: Lazaras - Punk/metal band. Biography, news, schedule and mp3 downloads.
Search Result exhibiting the problem: http://search.dmoz.org/cgi-bin/search?search=lazaras
Category: Category: http://dmoz.org/Business/Business_Services/Translation/Multiple_Language/Europe/United_Kingdom/
URL: http://www.tiservicesuk.com
Title/Description: TI Services (UK) Limited - Translation, interpreting and language training by bilingual staff.
Search Result exhibiting the problem: http://search.dmoz.org/cgi-bin/search?search=interpreting+language+training+ti+services+limited
Hope the description and examples help illustrate what I mean...There may be more than the above listed, but once I found it it had occured mutliple (ie more than once), I instigated a work around for the problem. Maybe suggest to staff a "duplicate site/category" detector system (I actually found these by generating a 32hex hash using md5hash, tagging the category ID to the end of the hash and then just scanning the list for duplicates).
Examples:
Category: http://dmoz.org/Arts/Music/Bands_and_Artists/L
URL: http://www.geocities.com/parttimelife/
Title/Description: Lazaras - Punk/metal band. Biography, news, schedule and mp3 downloads.
Search Result exhibiting the problem: http://search.dmoz.org/cgi-bin/search?search=lazaras
Category: Category: http://dmoz.org/Business/Business_Services/Translation/Multiple_Language/Europe/United_Kingdom/
URL: http://www.tiservicesuk.com
Title/Description: TI Services (UK) Limited - Translation, interpreting and language training by bilingual staff.
Search Result exhibiting the problem: http://search.dmoz.org/cgi-bin/search?search=interpreting+language+training+ti+services+limited
Hope the description and examples help illustrate what I mean...There may be more than the above listed, but once I found it it had occured mutliple (ie more than once), I instigated a work around for the problem. Maybe suggest to staff a "duplicate site/category" detector system (I actually found these by generating a 32hex hash using md5hash, tagging the category ID to the end of the hash and then just scanning the list for duplicates).
I've posted a copy of your findings internally.