And yet you make a lengthy post complaining that it's too slow and not responsive enough as a listing service. Almost all of the noise complaining about the ODP is webmasters.. not users.
It's a hard fact of life that from the user's perspective, those ODP categories probably look just fine without your site, my site or anybody else's site for that matter. Fundamentally, if the ODP gives the visitors a good choice of "Blue Widgets" sites then it succeeds in its core mission. It is not necessary to list every site to be useful to visitors and data users.