Once a user has subscribed to a provider's content, all of that provider's labels and subscribed links are added to the user's search results for relevant queries. These contributions serve as meta information that helps Google's search algorithms connect users to the most relevant information for their specific query. Users interested in contributing can get started at http://www.google.com/coop.
For example, a doctor can label web pages related to arthritis, and users who subscribe to that doctor's information will receive options at the top of the results for more specific information such as "treatment," "symptoms," or "for health professionals" when they enter a relevant query.
As a first step, Google has worked with partners to annotate web pages related to health and city guides and to offer dozens of subscribed links to specialized content such as restaurant and movie information. Going forward, the broader online community will begin building out new topic areas and subscribed links to help improve the way people find and discover information online.
Users can subscribe to content and providers at www.google.com/coop/directory. Google Co-op is available today on all English language Google domains including Australia, Canada, New Zealand, and the United Kingdom.