As of May 31, 2012, the Google Products Search will no longer be free. According to an email from a Google representative, he says that they are launching an initiative to create a better shopping experience on Google. As a first step, they are testing new formats on Google.com that make it easier for people to find products. Over the next few months, they’re transitioning from a free model to a commercial model, based on product listing ads, that they’re calling Google Shopping.