Uses of schema.org metadata
If schema.org metadata is available any search engine may use it to improve their search interface, for example: 
	by distinguishing between different things with the same name (e.g. a book, a film and a game);
	by allowing the most relevant information to be displayed more prominently on the results page;
	by enabling results to be filtered by properties such as price, supplier or publication date;
	by providing links to more results about the same subject or from the same publisher.
An example of such an interface can be seen on Google Shopping, as illustrated in figure 3. (We must note that Google probably gets the data for creating such interfaces from many sources not just schema.org metadata.)
The metadata can also be used in the Google Custom Search Engine to build specialized search services based on schema.org types and properties.