If the material is yours, you could claim your copyright. That is a legal issue, we can't give any legal advice - contact your lawyer about it.
Regarding the forum guidelines, we do not discuss site contents in here. To find your texts, try to search for your texts with searchengines.
Sorry, but that is no criteria. There are two scenarios:
a) Content is copied as you say. We can't know who submits his site first / is listed first. Might be the originator of the content, might be someone who copied it.
b) Someone sets up several mirrors. We might list one. Maybe. If the person does not spam the directory. If we feel that the content is worth it
To be honest, its nearly impossible to differ between the two possibilities. In some areas we assume that submitters are nice, in others our experience tells us that they are not. We are very restricting with online-casino sites due to the heavy amount of online-casino-spam flooding the ODP. That may be unfair against honest people, but we simply have no choice.