Its very disturbing to see large scaled images people posted here.
So I think the admin should fix it by resizing images.
like if anyone post 1280 x 960 pic it would be automatically resized to 640 x 480 [clicking the image would show the 1280 x 960 image]
Most of the forums do this thing I've seen.
And Signature should have a limit like 400 x 200 or suitable ones.
I'm fed up with large signatures they are vey disturbing
here is a example of resizing