In the end, i added the ability for codebeach.org users to release their source either under public domain or under BSD, Creative Commons, Apache License or MIT/X11. Some developers seemed interested in the project but couldn’t stand to lose copyright on their code. I understand them, and i’ll try to make it as painless as possible for both contributers and users of code.
Ah, as a sidenote, CodeBeach finally sports a commenting system!