[kragen]

This is the magic of free software licensing: by removing barriers to sharing, it multiplies the usefulness of whatever is licensed by a much larger number of users, who are all free to repurpose it as they see fit. Most of my own free software is pretty radically useless, but I've written Wikipedia pages that thousands of people read every day, and made improvements to countless others. It would be difficult for anything I do in a normal job to have as big an effect on the world, either positive or negative.