I posted about this in another. I have looked up these people entering the contest and they are not members. I have made comments on their PrestoPhoto if they allow them that these contest are for members only and tell them we would love to have them join our community. I place the text images in both contest explaining as well it is posted in the contest descriptions. There is nothing more I can do to stop non-members from entering since they fail to read the contest description or look back at the other entries and see the text image. It is obvious they don't read the description since they enter their images in both image and page contest.
As for disqualifying them or removing them, I can't remove them. I don't know if Amy or Christan can and they have much more important things to do besides worry about who is entering our contest. All I can do is if they get votes is to not count them.