So, can you explain your interest in this? What do you know? What have you already implemented? What benefits or problems have arisen?
I don't know about it please share more about it before read this post i was completely unaware that good shared something like this you are talking about. Can you please share any article link with us?.
Dublin Core is not a Google creation. The Dublin Core Metadata Initiative (DCMI) is the body responsible for the development of the metadata terms and metadata standards with the Dublin Core. The Dublin Core itself is simply
a set of 15 core metadata descriptors used to describe web resources although the core is extensible.
Google recently introduced for meta keywords tag for news articles <meta name=â€news_keywords†content="news keyword1, news keyword2, news keyword3" />
Well.. I have seen this update last month, Google has updated and giving importance to meta keywords for news related websites ('new_keywords' like this). And keywords limit around 10.