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So because Google, genius of geniuses can't seem to devalue it on their own....we have to deal with Negative SEO with no recourse?
dsfs.wfdgegf.dfqwgfvqe.comwith obviously spammy content meant to make a quick buck BUT I don't report others. Using a disavow tool though, as I was trying to say in the post you're quoting, could be used by Google to determine junk sites in much the same way as a spam report.
You can use nofollow for outbound links to show you don't trust the website the link points to.
It is about time there was a reverse. If a site you don't trust points to you, you should be able to signal 'nofollow' in reverse, either in webmaster tools or a txt file like robots.txt.
This tool is online since mid october see: