OAuth Provider Demo
This site is part of a demo for lab.madgex.com it has a contact details page secured using both forms and OAuth authentication. The contact 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.