As promised, behold my crappy Gimp skills! I've created a few [XFN] icons. I started with the more commonly used ones. They are based on the FOAF smiley face without a mouth iconography. Here's what I've created:

  • Friend Friend
  • Acquaintance Acquaintance
  • Contact Contact
  • met met (Meant to symbolozie a hand shake, or perhaps two feet in opposite directions, as if face to face)