From the blog post:
"I've just published portablecontacts-unofficial, a stand-inPortableContacts server for major sites that don't implement itthemselves. It currently has implementations for Facebook andTwitter, deployed at these endpoints:
They complement the unofficial WebFinger providers(http://snarfed.org/2012-01-16_webfinger_for_facebook_and_twitter )I published last month, which I've updated to include Link elementspointing to the new PortableContacts endpoints.
Both are just little side projects, and they may not be hugelyuseful on their own, but together they're another step towardimplementing OStatus bridge apps(http://snarfed.org/2011-07-27_facebook_app_for_ostatus ) formore of the major social networking sites.
Feedback and pull requests are welcome!"
here are example links to plaxo's poco test client that consume output fromthese two sites:
http://is.gd/xME355 (facebook)http://is.gd/OB3SnV (twitter)