H-card
From MozillaWiki
h-card is a simple, open format for publishing people & organizations on the web, using a 1:1 representation of vCard4 properties and values in HTML. h-card is one of several open microformat standards.
- Firefox 3+ supports hCard.
- Install the Operator Add-on to view and use hCard contacts in pages.
See the h-card specification for more: