"Google Shopping is becoming a commercial site." notice now appears on G's shopping results page.
Truly great search is all about turning intentions into actions, lightning fast. In the early days of Google, users would type in a query, we’d return ten blue links, and they’d move on happy. Today people want more. When searching for great local restaurants, people want places to eat right there on the results page, not another click or two away. It’s the same with hotels, flight options, directions and shopping.
Organizing these types of data can be very different from indexing the Web, because the information is often not publicly available. It requires deep partnerships with different industries—from financial services and travel to merchants who sell physical goods.
Today we’re announcing a new initiative to improve our shopping experience over time--so that shoppers (your customers) can easily research purchases, compare different products, their features and prices, and then connect directly with merchants to make their purchase.
main problem with this is that they always "test" it with a limited number of large players. so the big boys get "test" access to the best placements while small players don't. Well, that's how business works, but with Google it is extremely visible.