I'm asking this re a D700, but I guess it applies to any Nikon body. I recently picked up a used D700 with a low shutter count on the 'Sell' forum here. Then saw another one up for sale, also with a relatively low shutter count, and specifically indicating that it had never been reset.
This may be a silly question, But... it made me wonder if doing a full reset would reset the shutter count? (as per the EXIF data and readable in programs like Opanda). I certainly hope not, and would be surprised if it did, because obviously this would render any shutter count indication meaningless.