the best way to deal with this situation is stupid... use less wide browser windows... see, you can make them 1000 pixel wide, take your screenshot, and put them back to how you like 'em...
facebook think the same actually... maximum 960 pixels wide... everything bigger is resized.
i don't see why a website would move everything just to please people who like their widescreen to be filled with a single window...
Personally my limitation isn't the width, it's the length (I am aware of how this sounds :erm but especially when posting screen shots of settings longer would be better. I'd like to see a max height of 2000 pixels or more.