Thread:MrBlonde267/@comment-220364-20120406012031/@comment-16487016-20120406022939

It's arbitrary because we don't upload images to the site in chronological order. The names are really just a way of organizing the images so the galleries make sense internally. If we tried to make galleries all chronological, bigger ones like Batman's gallery would be a disaster area. It's completely fine if you want to make a gallery where the image numbering is in chronological order, but failing that we organize everything numerically.