Photo credit J. Kiss

Matthew Buckland has written up his experience using the Calais API, Calais Tagaroo and other services to bring semantic intelligence to South Africa's Mail & Guardian Online. 

EXCERPT: "It’s important to add semantic power to your content because it allows
your servers to find, extract, share, and re-use the information.
Tagging your content in the semantic sense will allow a computer to
“know” that Tony Blair or George Bush in your article or post are in
fact people, or that the United States of America is a country, and
Africa a continent.

It gives context to the tags in your articles — and
allows you to automatically do more with your content, such as build up
an index of people mentioned on your site or call up a map with the
locations referred to in an article. In a search sense, it helps search
engines deliver more relevant and accurate results."

Visit his blog for a number of interesting and insightful posts at  MathewBuckland.com.