How does image hosting work?
The system maintains static image URLs for each product with the following format:
http://ih.atensoftware.com/FeedId/OfferId.jpg
Our system actually ignores the file extension, so ending the URL with .gif, .png, etc will still redirect to the same image hosted at Yahoo. Image hosting data is refreshed every half an hour, ensuring that your new images will be accessible at the static URLs within half an hour after you republish your store.