I've just attended a lecture by Richard Stallman about the dangers of software patenting. He is one of the founder members of the GNU and FSF organisation. But in his talk he kind of said that he is against open source. Isn't open source synonymous with free software? I mean... when you mean "free", does it mean free source or free to use? I would have asked him but he had to rush off and didn't entertain too many questions.