I see the limitation of 700 as well. Can't this be increased to 1024x768? Currently, a lot of coders pictures that they add is very low quality and I can't even see the images properly. While this is a mistake by the coder by making such big pictures, it would be great if vbulletin.org's size limitation can be increased.
You hit the nail on the head. This is a mistake by the coder therefore it's entirely up to the person to provide a correctly formatted, correctly sized screenshot so members can clearly view what the screenshots look like.
People are responsible for their own mistakes/lack of knowledge not the guy next door.