>Would it outrage you for someone else to take your code, put a pretty GUI on top, sell it, and make millions while you make nothing?

If he does it with the same license as mine (i.e. GPL), then no, it wouldn't outrage me (I would even be interested in applying to his company, so he teaches me how she did it). What I care about is the freedom of the users of my software (so I want to seal it to not be proprietary, ever), not about how other developers benefit from my creation.