[stefan_kendall]

My source is open for my side projects, but it is not open source.

If anyone wanted to learn from or copy my work in non-substantive ways (say to solve a different problem), I would have no issue whatsoever.

If they want to help my projects, I'm also happy to accept changes. But I own the copyright, and I own all distribution rights.

I think this is a much more sane code strategy for many businesses with traditionally entirely-closed source policies.