Free as in beer

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
 * ----------------------------------------------------------------------------
 */