Comment by jimmaswell

Worse than unimportant, I find copyleft harmful to the developer community as a whole. Software is hardly "free" when you have to bend to the author's demands to license your entire rest of your project under their ideology if you want to use it, and I think we should stop calling it so. Maybe "Conditionally Free Software" instead. You're hardly helping the world releasing libraries in terms that nobody but hobbyists (who are going to rip your code out and replace it if they start making a proprietary product, which is not evil) will find acceptable. It works for the Linux kernel and self-contained applications but that's it.