Found this at Jesse Ruderman’s Squarefree site: Beerware code in Mozilla. Open source people talk about the difference between “free as in beer” and “free as in speech”. Carrying the beer idea a little bit further is coder Poul-Henning Kamp who put this comment into his Mozilla code (as subsequently discovered by Jesse Ruderman).
/* * ---------------------------------------------------------------------------- * "THE BEER-WARE LICENSE" (Revision 42): * wrote this file. As long as you retain this notice you * can do whatever you want with this stuff. If we meet some day, and you think * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp * ---------------------------------------------------------------------------- */