This seems like a voluntary version of the "software tax" RMS wrote about way back in the day in the GNU manifesto (http://www.gnu.org/gnu/manifesto.html http:/

This seems like a voluntary version of the "software tax" RMS wrote about way back in the day in the GNU manifesto (http://www.gnu.org/gnu/manifesto.html http://www.gnu.org/gnu/manifesto.html, see “Programmers need to make a living somehow.”) I guess it never caught on then, but perhaps now that most software companies benefit in some way from FOSS, it makes more sense. At any rate, you deserve much props for making this pledge.