> If you have a contributor assignment, the assignee can choose to release the changes under a proprietary license.
Exactly! Hence my request for clarification (see above).
If more explanation is necessary: What davexunit is saying is that he wants his contributions to remain free. The AGPLv3 ensures that, even with copyright assignment. But what I guess davexunit really means is that he wants to be sure that all contributors, present and future, are locked into the AGPLv3 forever. I'm not saying the latter is wrong, I'm just saying you should call a spade a spade.