Microsoft announced the launch of Windows Live Product Search. From the looks of it, the service seems a lot like Google Base and eBay. The description from the announcement says that this service allows people "to find products available on the internet for sale." So it is not exactly like Windows Live Shopping, which launched May 1st, which only includes products from select merchants (who submit products to them). As an FYI, Google's Froogle also crawls the Web for products, but they also enable merchants to submit products via feed. We may have more on this next week.
Postscript: TechCrunch has a nice review on the release, and names Windows Live Product Search a Froogle Competitor.