Google has introduced the Google Merchant Center, designed to replace Google Base for submitting products to the search engine.
Google says that Merchant Center provides a better-optimized experience for product listings. The Merchant Center interface is similar to Base and uses the same account info. Just sign into Merchant Center with your Google Base account and you'll see your feeds, items, FTP settings, etc.
Non-product items still use Google Base. If you the same account for Merchant Center (for products) and Base (for non-products), Google says you'll need to reset your FTP settings in Google Base.