Postcardware
From Wikipedia, the free encyclopedia.

Postcardware is software similar to shareware, distributed by the author on the condition that users send the author a postcard. The concept was first used by Aaron Giles, author of JPEGView.

See also: nagware, careware, guiltware, payware, freeware

The original article can be found at: http://en.wikipedia.org/wiki/Postcardware.
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