roach = R = robot

robocanceller /roh-boh-kan'sel-*r/

A program that monitors Usenet feeds, attempting to detect and eliminate spam by sending appropriate cancel messages. Robocancellers may use the Breidbart Index as a trigger. Programming them is not a game for amateurs; see ARMM. See also Dave the Resurrector.

--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.