Google Base Merchants for Shopping
The LunaSoft Shopping Cart is built to work with Google Base Merchants product feed for customer that have a cart package with this feature.
Go to settings/google base in your shopping cart settings to get the feed. (as shown below)
When you edit each category within your shopping cart, you can set the corresponding google base taxonomy/category for your category. Setting the google taxonomy relationship will help your products place better within search results.
To learn more about setting up your Google Merchant feed, Google has created a help area here: https://support.google.com/merchants/?hl=en#topic=3404818
Screen shot of Google Base in shopping cart settings