I run a small blog called plaintxt.org that features some themes and plugins for WordPress that implement hAtom, hCard, and XOXO.
And apparently I'm an implementor. Yes! So here's my hCard implementation:
Scott Allan Wallick
Website plaintxt.org
Email mailto:scott.wallick@gmail.com
Address
47-30 59th Street
Woodside, NY
United States 11377-5313