Microformats RESTful API Demo
This site is part of a demo for labs.madgex.com it has a profile page secured using Forms, and OAuth authentication. The profile information is mark up with microfromat hCard.
The demo on lab.madgex.com uses OAuth.net access the page then UfXtract to parse the contact details into a form. The user can import their private contact details from one site to another in less than two clicks.