There would be a simple solution to a law that forbids linking to content without consent of the author: Only link to content where the author added a standard

There would be a simple solution to a law that forbids linking to content without consent of the author: Only link to content where the author added a standardized 'You are free to link to this page.' meta tag. In no time, every page on the net would carry that tag. Because authors want to be linked to.