FUD

FUD /fuhd/ n.  Defined by Gene Amdahl after he left IBM to
   found his own company: "FUD is the fear, uncertainty, and doubt
   that IBM sales people instill in the minds of potential customers
   who might be considering [Amdahl] products."  The idea, of course,
   was to persuade them to go with safe IBM gear rather than with
   competitors' equipment.  This implicit coercion was traditionally
   accomplished by promising that Good Things would happen to people
   who stuck with IBM, but Dark Shadows loomed over the future of
   competitors' equipment or software.  See {IBM}.