StartShoppingBot-Image downloads the images from the pages of your website where you are using the og:image tag in the web page code or you are using the product:image:url tag in sitemaps.
By default StartShoppingBot-Image will not download the image for a page again. You can set whether you want our bots to update the images or not in the Webmaster Tools
page for your website.
StartShoppingBot-Image will download the images for pages in your website at a frequency of 1 image per minute.