post
= P =
posting
postcardware n.
A kind of shareware that borders on
freeware, in that the author requests only that satisfied
users send a postcard of their home town or something. (This
practice, silly as it might seem, serves to remind users that they
are otherwise getting something for nothing, and may also be
psychologically related to real estate `sales' in which $1
changes hands just to keep the transaction from being a gift.)
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.