You don't understand the obvious differences between the content you post here comparing with the content you post in some other communities?
EDIT: Regarding the contest rules.. We never stated anywhere that only one image is taken in consideration.
On the contraire. Not so long ago we actually highlighted exactly the oposite:
Well, thanks for explaining. It'll be great if you were a little bit kinder with the comment though. It felt like I was being scolded for something I'm quite ignorant about.
We apologize for being a bit harsh in this case here. But seing some members posting long posts in other communities and coming here just to drop a single image feels a bit disrespectful. Specially if we take in consideration that we did try to address this issue and asked people to try to change that weird habit. We did our part and had no way to know if you read it or not.