Tags appeared as a result of blogs. It consists of associating qualifying keywords to an article, a photo, a book, etc.
For example a not on the Google-AFP story in France could be tagged with the following keywords:: "Google, Google News, AFP, France".
If you search for "google afp" using our site's search engine, the article on the Google-AFP story will appear in the results list.
You can also find a tag cloud that contains the most frequently used tags. The size of the tag is proportional to its importance.