RDFa

New research released by Yahoo! shows that RDFa demonstrated explosive growth in 2010. In fact, RDFa is the fastest growing data markup format on the Web, and is used on more than 430 million web pages. It accounts for roughly 3.6% of the all of the Web pages on the Internet. How much did RDFa grow last year? 510% – you can bet that this year will show even stronger growth as people start to realize the search engine advantage that RDFa gives web content publishers.

You can learn more about this cutting edge research by Peter Mika at Yahoo! on his personal blog.

This happened some time ago, but we forgot to mention it. Flickr expresses information about images and the licenses associated with those images using RDFa. In fact, Flickr was one of the first services to adopt RDFa and use it to express metadata about the contents of the web page.

Since so many sites use Drupal as their content management system (including the Whitehouse, the BBC, Ubuntu, CNN, NATO and Amnesty International, and, well, so many others) we can expect to see RDFa appearing on many new sites in the near future.

More details here.