"Nowadays the Net is full with GPLv3 vs. GPLv2 bashing. Even FOSS luminaries get their hands dirty in it. That is why I liked so much this article by Glyn Moody--one of the few attempts to analyze the reasons behind the differences.
"Moody points out that the different positions are based on the different cultures of the two groups, calling them 'pragmatists' (the GPLv2 supporters), and 'purists' (the GPLv3 camp). I would say, however, that the difference is not in the cultures. Yes, the controversy is mostly 'open source' vs. 'free software' supporters. But it is not due to the 'width of views'--it is in the different values and goals..."