Sticky bit -- To set or not to set.

["oread::barbanis" at coins.cs.umass.edu]

Greetings.
Is there any reason at all to have the sticky bit on in an executable?
Or, to put it differently, under what circumstances should it be set?
(circumstances such as program size, hardware/OS, program usage
pattern, etc.)
Unless I've missed something, only the ex/vi family editors have
the sticky bit on, on both our Suns and Vaxen.  Why is this A Good Thing
(or is it A Good Thing at all?)

George Barbanis
barbanis at cs.umass.edu