XFN

Microformat from 2003 for marking up how the person behind a link relates to you, such as friend, colleague or met, using the rel attribute; Google's Social Graph API crawled it.

See the vocabulary ↗ gmpg.org

Part of the thread Who issues your name online? proposes

created by

• Eric Meyer person [src1][src2]
• Matt Mullenweg person [src1][src2]
• Tantek Çelik person [src1][src2]

implemented by

• Google Social Graph API project 2008–2012 [src]

Sources

• https://en.wikipedia.org/wiki/XHTML_Friends_Network
• https://gmpg.org/xfn/