Quick question on rules - If you didn't win, but you supply the picture for the winner (for whatever reason) are you aloud to do captions? Because, you have an unfair advantage having picked the picture. Just wondering.
If you are asked to post a picture for someone who can not do it for a time period, you may caption the picture. Just find a picture and post it. I don't think its an unfair advantage. You may think you have a winner caption for the picture you post, but someone may blow you out of the water with there caption.
The only thing you really need to do is be fair when judging. Always pick the one that was the funniest to you.
Another rule is, never complain if your caption did not win, but you thought it was the best one.
Carry on.