Erast Benson wrote:
The GPL does not force developers to "contribute their changes back". That's exactly the *point*.Explain please.
Read this book: http://www.oreilly.com/catalog/osfreesoft/book/ , then read this book: http://www.rosenlaw.com/oslbook.htm , then read the GPL FAQs, and the philosophical material on FSF's site.Then you should have a much better understanding of software licensing, MPL-derived licenses, the LGPL and the GPL, and your questions should largely find answers on your own. You seem to be very confused about how the GPL or (for the matter) the CDDL works.
This is a debian development mailing list, and not an open source software licensing teach-in.
cheers, dalibor topic