Hi Jasmine,
The "Listings" column on your "Manage Images" page is intended to indicate how many listings each image is being used in. However, there is currently a "bug" in our system that causes images used in relisted items to erroneously display a "0" in the "Listings" column so, unfortunately, this data is not 100% reliable at this point.
Any additional questions or concerns? Please file a support request using the appropriate link on our help page: http://www.auctiva.com/free-auction-software-help/help.aspx
-Mike