I figured the CREDITS format used by the Linux kernel was as good as 
any.  I doubt this file will ever be quite as long though. :-)

Linus said:

  The file is sorted by name and formatted to allow easy grepping and
  beautification by scripts.  The fields are: name (N), email (E),
  web-address (W), PGP key ID and fingerprint (P), description (D), and
  snail-mail address (S).

-----

N: Bjarni R. Einarsson 
E: bre@netverjar.is
W: http://bre.klaki.net/
D: Wrote initial versions of everything

