Metadata is structured data that describes the characteristics of content. It is loosely defined as data about data and is primarily read by machines to manage documentation and help search engines identify and index relevant content for search results. The HTML format used to define Web pages allow for the inclusion of a variety of types of metadata, which now include content embedded in Web pages.
Meta Data on New York Times Website:

Changing Scenario
The Semantic Web is an evolving development in which the meaning of information and services on the Web is defined, making it possible for the Web to understand and satisfy the requests of people and machines to use the content on the Web. With Semantic Web taking shape, metadata is evolving rapidly. For example, Google recently introduced rich snippets, which produce small samples of content, such as the following snippet pulled from a search:

What is to all?
While organizations like W3c and Dublin Core setting up the standards, there are plenty of new web applications and Search engines are already adapting to include semantic Web technologies and standards to more effectively deliver relevant and personalized content to end users.
Whether you are a usability professional or designer or web anlayst – it is a great opportunity to explore on doing better personalization, targeting, and new ways of understanding your website visitor.








