Brian, this is fascinating. You have taken the CC0 approach of encouraging adherence to “social norms”, rather than use the Creative Commons attribution license https://creativecommons.org/licenses/by/4.0/ , which might be more effective. Many people will affix a license to something even if it’s not clearly protected by copyright, as a way to intimidate copiers. That you are taking such an unconventional and principled approach is remarkable. Good luck. You might want to look at Mike Linksvayer’s post http://gondwanaland.com/mlog/2013/11/25/upgrade-to-0/ on why he recommends CC0 over CC-BY.