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ODP and Yahoo Size Charts
Records and graphs of the number of listings in the two internet directories between 1999 and 2004, provided by editor geniac.
Wikipedia: Open Directory Project
Crowd-sourced encyclopedia article describing the history and growth of the directory and explaining its organization, maintenance, management, policies and procedures, and criticisms of it.
Last update:September 24, 2015 at 7:05:09 UTC