> Is it unethical to use software for profit? When the licenses explicitly say that if you use the software for profit it requires attribution, the answer is clearly yes. My code on github is licensed such that if you use it, you must say where it came from. The only way this isn't at the very least unethical (because it goes against my wishes as owner of the code) is if you argue that github isn't "using" the code, which clearly isn't true, because if everyone was able to opt out there wouldn't be a product for github to be working on at all.