I have just started my website and have approx 1,000 in a folder called uploads/2013/11.
I heard that I should not have lots of images in just one folder? Because it takes too long to open that folder.
So will there be any disadvantages if I create folders with 2013/10, 2013/09, 2013/08, 2013/07 and split the number of images into these folders (eg. only 200 images in each folder)? Any permalinks problems or any other problems?