HTML5 Microdata and Schema.org
I find the efforts by big Web companies to “order the web” fascinating and the implementation of metadata into HTML5 advantageous for the future of utilizing web resources for sophisticated information needs. I found it very intuitive to include this information in html code, since it has been used somewhat similarly for search engine optimization for many years.
The key to the effectiveness of this implementation though lies in the controls placed on descriptive vocabulary. In the case of a traditional collection we typically think of one object type or at least a recognizable format for most, if not all objects. If we can imagine the variety of material presented across the internet though we can quickly see the importance of controlling descriptions through a controlled vocabulary.