Copyleft

'''Copyleft''' describes the use of traditional [[copyright]] and [[intellectual property]] law to pursue goals of open sharing and collaboration. [[Creative Commons]] and the [[open source]] movement present two examples of copyleft: both allow creators of work to attach 'copyleft' conditions on their work - this uses the protections of copyright law to ensure that the work is distributed freely. A key distinction for some copyleft work is whether the copyleft is 'viral' - in the case of the [[GNU General Public License]] and the Creative Commons ShareAlike licenses, all derivative work must also be licensed under the same license.

'''Copyleft''' describes the use of traditional [[copyright]] and [[intellectual property]] law to pursue goals of open sharing and collaboration. [[Creative Commons]] and the [[open source]] movement present two examples of copyleft: both allow creators of work to attach 'copyleft' conditions on their work - this uses the protections of copyright law to ensure that the work is distributed freely. A key distinction for some copyleft work is whether the copyleft is 'viral' - in the case of the [[GNU General Public License]] and the Creative Commons ShareAlike licenses, all derivative work must also be licensed under the same license.