Upload & Sell: Off
Why do so many photographers have this problem? With all my Camera's I leave the file number on continuous, then when the count reaches 10,000 I make sure the next folder is 101, you can then see at any time the shutter count on the small LCD on the back of the Camera!
I would guess that more folks use the folder feature to organize images as they are captured. When I shoot a large tournament or even something like three basketball games in the same evening I first manually create folders 100, 101 and 102 via the menus. I put game-1 in folder 100, game-2 in folder 101, etc. I've shot as many as 15 games in one day during a field hockey tournament and had them nicely organized into folders when I got home. It made it very easy to sort and upload into the appropriate web folders.
I then format the card and start over the next day.