Talk to an open-source developer, and they'll tell you that they code for more than the 1s and 0s. Whether it's for the "egoboo" (reputation boost) that Eric Raymond notes or for some other reason, it's usually not for cash [PDF]. Most open-source developers code for more than money (though money is important).
According to a 2002 survey done by the Boston Consulting Group [PDF], the primary reason developers contribute to open-source projects is that they find it "intellectually stimulating." Th second reason was that it "improves skill." Third was "work functionality." "Money" didn't make the list.… Read more