The DataPortability Project has gained another adherent in Digg, which announced on its blog today that it has implemented three under-the-hood enhancements.

These include implementation and improved support for XFN and hCard, which help other sites access information about your friends on Digg. The site has also added RDF to make its pages more semantic web friendly.

Digg joins Facebook, Google, Plaxo, Six Apart, LinkedIn, and Microsoft in its welcome decision to support DataPortability. But one has to wonder where its enthusiasm for the related OpenID movement has gone.

In February 2007, Kevin Rose said that Digg would begin adopting OpenID by the end of that year, but we haven’t seen any action on that front. Let’s just hope Digg doesn’t remain in the wrong camp for much longer.