This may be a rather adversarial thing to say, but I really had a hard time voting for pictures that required scrolling. It was hard for me to get a sense of the broader art when I couldn't see the whole thing at once.
My sideways point here (as it were), I think, is that ever contest has parameters. And it seems to me that part of this one's is the way the photo gets displayed. In my case, that's on a 2048x1152 screen.
No action required. I'm not complaining. It's just something I noticed.