In reply to Jeffrey.

Creative commons is a huge organization supported by dozens of government and private entities.

They have been doing fantastic work in the field of non-commercial and fair re-use attribution licenses for, well, forever. Think of it as a craft-your-own open source license specifically geared toward intellectual property and creative work.

If you aren't familiar with them, you should be.. and definitelly consider supporting them.

Creative commons is as important to artists and creators as the GPL is to WordPress developers.