How To Tell Search Engines What "Entities" Are On Your Web Pages : "Search engines have increasingly been incorporating elements of semantic search to improve some aspect of the search experience — for example, using schema.org markup to create enhanced displays in SERPs (as in Google’s rich snippets). Elements of semantic search are now present at almost all stages of the search process, and the Semantic Web has played a key role. Read on for more detail and to learn how to take advantage of this opportunity to make your web pages more visible in this evolution of search." 'via Blog this'
Concerned with investigating appropriate methods to 'rescue' at risk web resources in a sustainable form.