From time to time you might come across an opponent that is just too
powerful for you to beat, but who incessantly makes your life a living
hell.  Revenge can still be had, however.  Simply place a bounty on that
player, and some other enterprising cyborg will happily do your work for
you.
    You may only place a bounty on a player with a higher score than you
and you must have a score of at least 1000 to place any bounties.  Bounties
are automatically collected when you kill the player.  Note that death
must be directly by your own hand -- a dropped grenade, for example, which
kills that player is not sufficient to collect the bounty.

Bountying commands:

BOUNTY                   Display a list of current bounties.  There can be
                         no more than 20 active bounties at one time.
BOUNTY <amount> <player> Places a bounty on <player> for <amount> credits.
                         You must have these credits on your person.  The
                         minimum bounty is 100 credits.