Forum Moderators: open
1) If someone else had your domain name before you, the site might be listed under a seemingly-irrelevant category. (Robozilla doesn't monitor for changes in content, so if an ownership transistion is smooth enough to prevent significant downtime, it's possible nobody at the ODP will notice a site changing mission.)
2) If there's any URL in the ODP that's redirecting to your site, Robozilla will follow the redirect in order to find the true address of your site.
If it's the site in your bookmarks, you are unlikely to be listed outside of regional, as the scope (currently) is fairly local.
You are also quite likely to fall under the 'under construction' rule - too many links don't, too many pages are empty.
But many editors will place such a site somewhere to monitor it .. robozilla may have found where!