FOAF

( //, n.)

   [Usenet;  common]  Acronym for `Friend Of A Friend'. The source of an
   unverified,  possibly  untrue  story. This term was not originated by
   hackers  (it  is used in Jan Brunvand's books on urban folklore), but
   is  much better recognized on Usenet and elsewhere than in mainstream
   English.

[glossary]
[Reference(s) to this entry by made by: {cookie monster}{furrfu}]