I am currently evaluating Contribute 3 and wanted to find out if a publisher
could delete an image from their Website space.

I have a client that wants to keep adding new images to their website on a
weekly basis using Contribute. Obviously Contribute will allow a publisher to
upload as many images they like from their computer. I am concerned however,
that their web space will eventually fill up if they are not allowed to delete
images which are not displayed on their website.