I agree with this outlook. However, I don't know how I'd react if this were to happen to me. If I do something out of altruism and somebody takes it and makes money off it, I guess it leaves a bad taste? Other than that, I think this approach is done everyday by every developer, whether they take code from other softwares or from StackOverflow, very rarely do they credit or even give reference to where the code has been taken from.