Based on feedback from collectors, I have given ChipGuide administrators this guideline - "only replace an image on the ChipGuide when a SIGNIFICANTLY better image is available".

The ChipGuide currently allows for only one contributor per item. So when an image is replaced, the contributor's name is also replaced, we do not maintain a record of previous contributors for an item. It would be a major change to the ChipGuide to keep track of previous contributors. Major Change = hours, maybe days, of work to implement. And it would mean that item listings would get larger.

The tally of contributions on the Contributor page is done daily by sorting the item table by contributor and then by collectible type and then counting and putting the results in a table. So if an image was replaced, the new contributor would have one additional item and the previous contributor when have one less item.