I did a Google search on a quote for part of the agreement and found that it does indeed seem to be a standard clause on many websites. I couldn't find anything to explain under what conditions such a license agreement would make sense. For an art contest, it's inappropriate. I wonder how many people, that entered the contest, did so without reading the couple of paragraphs that were above the upload button? I decided to post a similar thread at the DAZ Commons to see if they want to say anything about the agreement. I don't know if they would want to contact whoever exercised that claus to have it reworded more along the lines of the usual DAZ contest agreements. This is a good reminder to read the terms of agreement before uploading images to any sites because many have details, in the fine print, that grant them great license over the works on their sites.

My visual indexes of Poser content are at http://www.sharecg.com/pf/rgagnon