From Microformats

XFN - Xhtml Friends Network

XFN (XHTML Friends Network) is a simple way to represent human relationships using hyperlinks.

The XFN specification and more information can be found at GMPG.org (http://www.gmpg.org/xfn/).

• XFN home page (http://gmpg.org/xfn/)
• introduction to XFN (http://gmpg.org/xfn/intro)
• XFN and identity consolidation with rel="me" (http://gmpg.org/xfn/and/#idconsolidation)

Some pages discussing XFN can be found on this wiki:

• XFN+hCard supporting friends lists - examples in the wild of XFN usage.
• xfn-implementations
• xfn-cheatsheet - see http://gmpg.org/xfn/join and existing-rel-values
• xfn-faq
• xfn-clarifications - should eventually be rolled into XFN info on GMPG.org.
• xfn-issues
• xfn-brainstorming

Lengthy article(s) on XFN:

• XFN:bottom-up Social Networks by Stowe Boyd (http://www.centralityjournal.com/archives/xfn_bottomup_social_networks.html)