Laine> They should keep in mind that enabling outgoing identd is a
    Laine> security *plus*, not a minus.

Nope. identd is at best security-neutral. You have no way of knowing
if you can trust the information that the daemon returns unless you
control the system running it. It can also be argued that the
information handed out by identd - OS, user names and the like - is a
security weakness and may violate data protection laws.