A lot is caused by the forwarding services that mask the numbers. Really each should be held liable for any damages.
Maybe requiring them to post a large bond (proportional to the liability) and/or have insurance?
I'm guessing it has something to do with the snowshoe-spamming reference, but I'm totally in the dark.
Or does it just insta-kill all their posts?
(My entire understanding of law comes from law and order so take what i said with a grain of salt)