I've been thinking about this issue recently... I've come to a conclusion: I don't support copyright in it's current form (at all, in any situation). I think it should be similar to the patent system - the knowledge/information is shared for free with all the world, but the commercialization of the idea is limited - you shouldn't be able to make money using copyrighted stuff, but private persons should be able to copy it at will. The alternative would be, as with the patent system, to never release your idea to the public, but keep it private instead.
