"One of the problems with open source is that much of it happens
invisibly. Whereas proprietary software, which is sold, has to
publicised at some point, open source can simply be written:
whether or not it gets used is a question of the author's personal
"Even the big-name open source projects--Linux, Apache,
Firefox--have the problem that contributions are made in all sorts
of ways, and that there is nobody really tracking who is doing what
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