No actually you were an exception to what I was talking about for the most part. I could tell that you wanted to help the photographers.
However I do suggest you contact the people and ask permission first. But from what I have seen of your posts, you are running a contest most of the time and people submit which is giving you their permission and I think your posts also feel to me like you are promoting the photographers. And your comment here proves to me that your intentions are good.
Unlike the other people who I have had dialog with and they are were very defensive, arrogant and insulting or non-responsive to my comments.
I actually felt Honored to be included and left a comment to that effect on your post. But I do prefer to be asked, as that also let's me know I'm being included. :)
For the SPC I have a disclaimer that gives me the permission to re-post any of the entries if they have won a position. It's just after the rules section. I wanted to cover my bases there so that there wouldn't be and problems in the future especially if a copyrighted image made its way through that the person didn't have permission to post!!
It says:
"By entering this competition you acknowledge that you own the rights to the photographs and allow for me to re-post the image should it receive a winner or honourable mention position."
So when does that Erotic Fine Art contest start :)
Soon I'm working on the Rules right now :)