Google Base Store Connector is a migration tool that allows you to export product information from online stores hosted by eBay, Amazon or Yahoo to Google Base. Google explains: "Google Base Store Connector is a free download that puts info about your store into our index, so that when people search Google for the products you have to sell, you'll show up in their search results, along with a link directly to your site on eBay, Amazon or Yahoo."
Google spends a lot of time lately getting ready for their big December launch. The launch of Google Base API, this migration tool and some additions to Google's robots.txt suggest that Google tries really hard to be successful in the shopping area.