N. Dan Smith writes: The Free Software Foundation makes it quite clear that selling free software is not only permissible, it is encouraged. There are some high-profile examples of this in embedded systems and in commercial Linux distributions. However, many free software developers distribute both binaries and sources free of charge. What free software have you paid for? What was the incentive for buying, knowing that you could probably procure the underlying source code for free?
Time is nature's way of making sure that everything doesn't happen at once.
Space is nature's way of making sure that everything doesn't happen to you.