What our licenses do
The Creative Commons copyright licenses and tools forge a
balance inside the traditional “all rights reserved” setting that
copyright law creates. Our tools give everyone from individual creators
to large companies and institutions a simple, standardized way to grant
copyright permissions to their creative work. The combination of our
tools and our users is a vast and growing digital commons, a pool of content that can be copied, distributed, edited, remixed, and built upon, all within the boundaries of copyright law.
http://creativecommons.org/licenses/