there is no way currently to display images only be specific resolutions - there are however several other sort options including one that displays only images that match your screen's resolution.
there may, or may not be a 3000x2000px, extremely grainy photo that you may not like popping up in my gallery soon...
...i'm not sure, i think the server coughed up the 16 bit file the first time, then the second (still 16bit), i clicked the wrong one...and the third time it says you've exceeded you daily upload limit.