I don't see anything wrong with "pay what you want" Ubuntu as long as people who pay don't get special treatment. The easiest way to ensure that would probably

I don't see anything wrong with "pay what you want" Ubuntu as long as people who pay don't get special treatment. The easiest way to ensure that would probably be anonymous contributions. Similarly, certain definite projects like "get X functionality into Y application" could be valid targets for a kickstarter-like projects. Paid-for code released under GPL. Why not ? This measure would be best reserved for unfun tasks, something no one wants to do.