Official Google Base Blog: New Policies for Marketplaces & Aggregators on Google Product Search

Today we’re happy to introduce multi-client accounts as a solution to help aggregators and marketplaces manage feeds for multiple sellers under a single account. By allowing marketplaces better control over their sellers’ product data, shoppers get more accurate and relevant information when they search for things to buy on Product Search, and individual sellers don’t need to submit their own feeds. The multi-client accounts allow aggregators and marketplaces to consolidate and manage data feeds and reporting for sub-accounts, submit changes more rapidly, and get more accurate Google Checkout badging at the seller level. Marketplaces and aggregators will be required to use multi-client accounts to submit and manage their sellers’ feeds starting on December 1st, 2009.