Mike Linksvayer

Mike Linksvayer at

Public domain isn't copyleft. Only one CC license is copyleft, Attribution-ShareAlike (CC-BY-SA, which is actually a bunch of licenses, considering all the versions and "ports", oh also CC-SA-1.0; but the ones with NC or without SA aren't copyleft). The previous sentence with parenthetical will be expanded in a future version of the guide. :)