I think there's some image shenanigans going on with imageshack - the last week or so I've noticed an increase in added noise and less clarity on some of my images
Those above I changed to imgur - but this is the link to imageshack using "do not resize" and should also be 3000x2000 - but i think they are just sizing back up after some compression or some jpg quality changes or something.
I notice it in the runouts usually, but I've seen just an over all decrease in image quality - so I may just make the switch to imgur -