XHTML Friends Network (XFN)

XFN™ macht es möglich, soziale Beziehungen unter Blogautoren kenntlich zu machen. Dies geschieht über bestimmte rel-Attributte, die den Links auf Webseiten von Bekannten, Arbeitspartnern und Freunden hinzugefügt werden.

XFN™ (XHTML Friends Network) is a simple way to represent human relationships using hyperlinks. In recent years, blogs and blogrolls have become the fastest growing area of the Web. XFN enables web authors to indicate their relationship(s) to the people in their blogrolls simply by adding a ‹rel› attribute to their <a href> tags, e.g.:

<a href="http://xeophin.net" rel="friend met">...</a>

Beziehungen, die durch XFN ausgedrückt werden können

  • contact: Someone you know how to get in touch with. Often symmetric.
  • acquaintance: Someone who you have exchanged greetings and not much (if any) more — maybe a short conversation or two. Often symmetric.
  • friend: Someone you are a friend to. A compatriot, buddy, home(boy|girl) that you know. Often symmetric.
  • met: Someone who you have actually met in person. Symmetric.
  • co-worker: Someone a person works with, or works at the same organization as. Symmetric. Usually transitive.
  • colleague: Someone in the same field of study/activity. Symmetric. Often transitive.
  • co-resident: Someone you share a street address with. Symmetric and transitive.
  • neighbor: Someone who lives nearby, perhaps only at an adjacent street address or doorway. Symmetric. Often transitive.
  • child: A person’s genetic offspring, or someone that a person has adopted and takes care of. Inverse is parent.
  • parent: Inverse of child.
  • sibling: Someone a person shares a parent with. Symmetric. Usually transitive.
  • spouse: Someone you are married to. Symmetric. Not transitive.
  • kin: A relative, someone you consider part of your extended family. Symmetric and typically transitive.
  • muse: Someone who brings you inspiration. No inverse.
  • crush: Someone you have a crush on. No inverse.
  • date: Someone you are dating. Symmetric. Not transitive.
  • sweetheart: Someone with whom you are intimate and at least somewhat committed, typically exclusively. Symmetric. Not transitive.
  • me: A link to yourself at a different URL. Exclusive of all other XFN values. Required symmetric. There is an implicit «me» relation from a subdirectory to all of its contents.

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