Search Result for "postcardware":

The Jargon File (version 4.4.7, 29 Dec 2003):

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 Free On-line Dictionary of Computing (18 March 2015):

postcardware 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.) [Jargon File]